[BUG] New ReqServer memory leak in 3006.10

Description
I recently upgraded from 3006.9 to 3006.10, and a new memory leak appears to have been introduced.
I now have to restart salt-master basically every day to avoid OOM issues, and will probably have to revert to .9

Setup
Master is on KVM. I have only twelve minions, on a mix of machine, but all the same version as the master.
They run state.apply every fifteen minutes, and a couple run some other scheduled script that doesn't interact with the master.
Both gitfs and git_pillar are in use, as well as x509 (v1) states and mine requests.

Steps to Reproduce the behavior
Salt process shortly after a restart:

    PID USER       PRI  NI  VIRT   RES   SHR S  CPU% MEM%▽  TIME+  Command
    977 root        20   0  693M 87812  8960 S   0.0  1.5  1h23:53 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion MultiMinionProcessManager MinionProcessManager
4046378 root        20   0  394M 71880 18692 S   0.0  1.2  0:00.91 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master FileServerUpdate
4046359 root        20   0  216M 65960 23808 S   0.0  1.1  0:01.21 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master MainProcess
4046376 root        20   0  223M 62496 13700 S   0.0  1.1  0:00.50 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master Maintenance
4046392 root        20   0  306M 62256 11140 S   0.0  1.1  0:01.02 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-4
4046382 root        20   0  306M 60976 11012 S   0.0  1.0  0:00.99 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-1
4046384 root        20   0  304M 57008  7172 S   0.0  1.0  0:01.01 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-2
4046380 root        20   0  303M 56240  6404 S   0.0  1.0  0:00.98 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-0
4046385 root        20   0  303M 56240  6404 S   0.0  1.0  0:01.04 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-3
4046379 root        20   0  584M 48944  6020 S   0.0  0.8  0:00.01 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorkerQueue
4046372 root        20   0  296M 48624  6660 S   0.0  0.8  0:00.05 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master PubServerChannel._publish_daemon
4046377 root        20   0  216M 47520  5252 S   0.0  0.8  0:00.03 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer ReqServer_ProcessManager
4046373 root        20   0  217M 47360  5508 S   0.0  0.8  0:00.01 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master EventPublisher
    947 root        20   0  168M 24728   256 S   0.0  0.4  0:00.54 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion

Salt processes thirty minutes later:

    PID USER       PRI  NI  VIRT   RES   SHR S  CPU% MEM%▽  TIME+  Command
4046392 root        20   0  616M  126M 31236 S   0.0  2.2  0:44.65 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-4
4046380 root        20   0  617M  126M 31236 S   0.0  2.2  0:45.11 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-0
4046382 root        20   0  615M  124M 31108 S   0.0  2.2  0:50.88 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-1
4046385 root        20   0  615M  123M 31108 S   0.0  2.1  0:38.10 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-3
4046384 root        20   0  614M  122M 31108 S   0.0  2.1  0:37.49 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-2
    977 root        20   0  694M 88836  9984 S   0.0  1.5  1h23:57 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion MultiMinionProcessManager MinionProcessManager
4046378 root        20   0  398M 75720 18180 S   0.0  1.3  0:07.85 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master FileServerUpdate
4046376 root        20   0  231M 70304 14340 S   0.0  1.2  0:11.13 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master Maintenance
4046359 root        20   0  216M 65704 23552 S   0.0  1.1  0:01.24 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master MainProcess
4046372 root        20   0  297M 54256 10884 S   0.0  0.9  0:00.30 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master PubServerChannel._publish_daemon
4046373 root        20   0  254M 52932  5508 S   0.0  0.9  0:00.68 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master EventPublisher
4046379 root        20   0  584M 50096  6020 S   0.0  0.9  0:08.88 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorkerQueue
4046377 root        20   0  216M 47520  5252 S   0.0  0.8  0:00.07 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer ReqServer_ProcessManager
    947 root        20   0  168M 24728   256 S   0.0  0.4  0:00.54 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion

24 hours later:

    PID USER       PRI  NI  VIRT   RES   SHR S  CPU% MEM%▽  TIME+  Command
4046392 root        20   0  690M  174M  4868 S   0.0  3.0 30:42.23 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-4
4046384 root        20   0  755M  173M  4996 S   0.0  3.0 29:52.55 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-2
4046380 root        20   0  753M  173M  4996 S   0.0  3.0 30:54.94 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-0
4046382 root        20   0  688M  172M  4996 S   0.0  3.0 30:44.35 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-1
4046385 root        20   0  689M  172M  4868 S   0.0  3.0 30:51.85 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorker-3
    977 root        20   0  692M 83744  3840 S   0.0  1.4  1h27:26 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion MultiMinionProcessManager MinionProcessManager
4046378 root        20   0  402M 63048  1284 S   0.0  1.1  0:29.32 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master FileServerUpdate
 503265 root        20   0  230M 58304  3456 S   0.0  1.0  0:28.76 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master Maintenance
4046373 root        20   0  254M 56928  2564 S   0.0  1.0  0:26.97 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master EventPublisher
4046372 root        20   0  299M 46704  2948 S   0.0  0.8  0:09.60 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master PubServerChannel._publish_daemon
4046379 root        20   0  584M 45744  1156 S   0.0  0.8  6:18.52 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer MWorkerQueue
4046377 root        20   0  216M 43552  1284 S   0.0  0.7  0:03.25 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master ReqServer ReqServer_ProcessManager
4046359 root        20   0  216M 43432  1280 S   0.0  0.7  0:04.29 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-master MainProcess
    947 root        20   0  168M 24728   256 S   0.0  0.4  0:00.54 /opt/saltstack/salt/bin/python3.10 /usr/bin/salt-minion

Expected behavior
Memory usage should not keep growing.

Versions Report

Salt Version:
          Salt: 3006.10

Python Version:
        Python: 3.10.16 (main, Mar  6 2025, 02:23:15) [GCC 11.2.0]

Dependency Versions:
          cffi: 1.17.1
      cherrypy: unknown
  cryptography: 42.0.5
      dateutil: 2.8.1
     docker-py: Not Installed
         gitdb: Not Installed
     gitpython: Not Installed
        Jinja2: 3.1.6
       libgit2: 1.9.0
  looseversion: 1.0.2
      M2Crypto: 0.38.0
          Mako: Not Installed
       msgpack: 1.0.2
  msgpack-pure: Not Installed
  mysql-python: Not Installed
     packaging: 22.0
     pycparser: 2.21
      pycrypto: Not Installed
  pycryptodome: 3.19.1
        pygit2: 1.17.0
  python-gnupg: 0.4.8
        PyYAML: 6.0.1
         PyZMQ: 23.2.0
        relenv: 0.18.1
         smmap: Not Installed
       timelib: 0.2.4
       Tornado: 4.5.3
           ZMQ: 4.3.4

System Versions:
          dist: ubuntu 24.04.2 noble
        locale: utf-8
       machine: x86_64
       release: 6.8.0-56-generic
        system: Linux
       version: Ubuntu 24.04.2 noble

Additional information
Version report from before the upgrade is here: #67207