[BUG] DeprecationWarning in salt/modules/file.py: 'count' passed as positional argument to re.subn on Python 3.13+ / 3.14

https://github.com/saltstack/salt/blob/c8f7e9ab9b833333ac9d8d3d16e31878c58aab3e/salt/modules/file.py#L2837

Description

When running salt-call or applying states on nodes running Python 3.13 or Python 3.14, a DeprecationWarning is emitted to stderr from salt/modules/file.py:

/opt/saltstack/salt/lib/python3.14/site-packages/salt/modules/file.py:2833: DeprecationWarning: 'count' is passed as positional argument
  result, nrepl = re.subn(

Python 3.13+ / 3.14 deprecates passing count as the 4th positional argument to re.subn() (and re.sub()), requiring keyword arguments instead.

Steps to Reproduce

1. Run salt-call --local state.apply on an environment running Python 3.13+ / 3.14.
2. Observe stderr output during file state replacements.

Expected Behavior

file.replace and internal string replacements in salt/modules/file.py should execute cleanly without emitting Python DeprecationWarning messages.

Actual Behavior

The following deprecation warning is printed to stderr:

/opt/saltstack/salt/lib/python3.14/site-packages/salt/modules/file.py:2833: DeprecationWarning: 'count' is passed as positional argument
  result, nrepl = re.subn(

Proposed Fix

In salt/modules/file.py (around line 2833), update the re.subn call to pass count as a keyword argument (count=count):

-                result, nrepl = re.subn(
-                    cpattern,
-                    repl.replace(b"\\", b"\\\\") if backslash_literal else repl,
-                    r_data,
-                    count,
-                )
+                result, nrepl = re.subn(
+                    cpattern,
+                    repl.replace(b"\\", b"\\\\") if backslash_literal else repl,
+                    r_data,
+                    count=count,
+                )

Environment

• Salt Version: 3008.2+
• Python Version: 3.13 / 3.14

Start in salt/modules/file.py around line 2833 and reproduce file replacement on Python 3.13 or 3.14 to confirm the warning. Update the re.subn call so count is passed by keyword, then verify that file.replace and related internal replacements run without the DeprecationWarning.