roachtest: apt_problem failed

**Note:** This build has runtime assertions enabled. If the same failure was hit in a run without assertions enabled, there should be a similar failure without this message. If there isn't one, then this failure is likely due to an assertion violation or (assertion) timeout.

roachtest.apt_problem [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21478851?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21478851?buildTab=artifacts#/psycopg) on release-25.4.15-rc @ [4913a926920d3003e1223156615a6a6a7d524b59](https://github.com/cockroachdb/cockroach/commits/4913a926920d3003e1223156615a6a6a7d524b59):

```
test psycopg failed: (psycopg.go:84).func1: all attempts failed for install dependencies: full command output in run_093843.556421915_n1_sudo-aptget-qq-insta.log: error persisted after 3 attempts: TRANSIENT_ERROR(apt_problem): exit status 100
test artifacts and logs in: /artifacts/psycopg/cpu_arch=fips/run_1
```

Parameters:
- arch=fips
- cloud=gce
- coverageBuild=false
- cpu=4
- encrypted=false
- metamorphicLeases=expiration
- runtimeAssertionsBuild=true
- ssd=0
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21478851/psycopg/1787475644688/1787478109436)

Same failure on other branches

- #173550 roachtest: apt_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.23-rc]
- #172603 roachtest: apt_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-26.1.8-rc]
- #172511 roachtest: apt_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.2.22-rc]
- #171651 roachtest: apt_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-25.4.12-rc]
- #171285 roachtest: apt_problem failed [O-roachtest O-robot T-testeng X-infra-flake branch-release-26.1.5-rc]

/cc @cockroachlabs/test-eng

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*apt_problem.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Start with the linked TeamCity build and the full command output in run_093843.556421915_n1_sudo-aptget-qq-insta.log, then compare the listed failures on other branches. Read the roachtest README and the failure around psycopg.go:84; done means identifying the apt_problem cause and confirming the psycopg test passes reliably under the affected configuration.

Written by the indexing model from the issue text.