chore(ci): improve go version management in CI

[samber]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.47%. Comparing base (4e29108) to head (b8d22df).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #97      +/-   ##
==========================================
+ Coverage   79.90%   87.47%   +7.56%     
==========================================
  Files          28       28              
  Lines        2195     1980     -215     
==========================================
- Hits         1754     1732      -22     
+ Misses        412      227     -185     
+ Partials       29       21       -8     

Flag	Coverage Δ
unittests	87.47% <ø> (+7.56%)	⬆️

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[Copilot]

Pull request overview

Updates GitHub Actions workflows to standardize how Go versions are selected in CI and to narrow when coverage/codecov runs.

Changes:

• Switch release.yml and lint.yml to use actions/setup-go with go-version-file: go.mod.
• Update test.yml Go matrix entries (replace 1.x with stable and add 1.26) and run coverage/codecov only on the stable matrix job.
• Rework lint.yml step order to checkout before setup-go (required when using go-version-file).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/test.yml	Adjusts Go matrix and limits coverage/codecov to the stable job; also changes workflow triggers.
.github/workflows/release.yml	Uses go.mod to select the Go version for release workflow runs.
.github/workflows/lint.yml	Uses go.mod for Go version and moves checkout before setup.

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[Copilot]

pull_request trigger is commented out, so this workflow will no longer run for PRs (only on pushes). This is a significant behavior change and doesn't match the PR's stated goal of Go version management; re-enable pull_request: (or document why PR validation is intentionally disabled).

Suggested change

	# pull_request:
	pull_request: