ci: bump golangci/golangci-lint-action from 6 to 9

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from 6 to 9.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](golangci/golangci-lint-action@v6...v9)

---
updated-dependencies:
- dependency-name: golangci/golangci-lint-action
  dependency-version: '9'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/golangci-lint.yml

@@ -14,7 +14,7 @@ jobs:
           go-version: '1.24'
       - uses: actions/checkout@v6
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v9
         with:
           version: latest
           only-new-issues: true