chore: remove toolchain in go.mod files as renovate fails with it. set go directives to 1.25

[markphelps]

Re: #4738 (comment)

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The latest Buf updates on your PR. Results from workflow Proto / proto-lint (pull_request).

Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Sep 13, 2025, 2:48 PM

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Related Documentation

Checked 3 published document(s). No updates required.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.48%. Comparing base (0f104cb) to head (18a51f5).
⚠️ Report is 1 commits behind head on v2.

Additional details and impacted files

@@           Coverage Diff           @@
##               v2    #4746   +/-   ##
=======================================
  Coverage   62.48%   62.48%           
=======================================
  Files         132      132           
  Lines       15561    15561           
=======================================
  Hits         9724     9724           
  Misses       5155     5155           
  Partials      682      682           

Flag	Coverage Δ
integrationtests	36.91% <ø> (ø)
unittests	52.62% <ø> (ø)

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Documentation Updates

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