chore: upgrade go and x/crypto package

[creativeprojects]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.83%. Comparing base (eb6d9af) to head (6420180).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #56      +/-   ##
==========================================
- Coverage   76.95%   76.83%   -0.12%     
==========================================
  Files          28       28              
  Lines        1167     1161       -6     
==========================================
- Hits          898      892       -6     
  Misses        218      218              
  Partials       51       51              

Flag	Coverage Δ
unittests	76.83% <100.00%> (-0.12%)	⬇️

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[Copilot]

Pull request overview

This PR upgrades the module’s Go version and refreshes several dependencies (notably google/go-github and x/crypto), while also updating CI tooling (GitHub Actions and golangci-lint) to match.

Changes:

• Bumped Go version and updated Go module dependencies (go.mod / go.sum), including github.com/google/go-github to v86.
• Refactored GitHub client creation to use go-github’s newer auth/enterprise helpers and removed the oauth2-based helper client.
• Updated CI workflow and local lint tooling versions (Actions, codecov action, golangci-lint).

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
package.go	Removes //nolint:contextcheck suppressions from wrapper APIs.
Makefile	Updates the golangci-lint download tag to v2.12.2.
go.sum	Refreshes dependency checksums after module upgrades.
go.mod	Updates Go version and bumps key dependencies (go-github, x/crypto, gitlab client, etc.).
github_source.go	Migrates GitHub client setup to go-github/v86 APIs and drops oauth2 client helper.
github_release.go	Updates import path for go-github/v86.
cmd/serve-repo/logger.go	Removes gosec suppression on request logging.
.github/workflows/build.yml	Updates Go matrix, checkout/codecov actions, and golangci-lint version used in CI.

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