.github: Bump golangci/golangci-lint-action from 6.3.1 to 6.5.0 (#15046)

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from 6.3.1 to 6.5.0.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](2e788936b0...2226d7cb06)

---
updated-dependencies:
- dependency-name: golangci/golangci-lint-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Signed-off-by: Mario Minardi <mario@tailscale.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/golangci-lint.yml

@@ -31,7 +31,7 @@ jobs:
           cache: false
 
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@2e788936b09dd82dc280e845628a40d2ba6b204c # v6.3.1
+        uses: golangci/golangci-lint-action@2226d7cb06a077cd73e56eedd38eecad18e5d837 # v6.5.0
         with:
           version: v1.64