chore: bump go directive to 1.25.0

[fredbi]

Summary

• Update all go.mod (and go.work where applicable) to require go 1.25.0
• Run go mod tidy / go work sync to update checksums

Test plan

• CI passes on all platforms (ubuntu, macos, windows) x (stable, oldstable)

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.43%. Comparing base (839f84e) to head (2855bf3).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #87   +/-   ##
=======================================
  Coverage   97.43%   97.43%           
=======================================
  Files           2        2           
  Lines          78       78           
=======================================
  Hits           76       76           
  Misses          1        1           
  Partials        1        1           

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