Bump actions/cache from 5 to 6.1.0 (#234701)

Bumps [actions/cache](https://github.com/actions/cache) from 5 to 6.1.0.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](https://github.com/actions/cache/compare/v5...v6.1.0)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/aglint.yml

@@ -60,7 +60,7 @@ jobs:
         run: npm ci
 
       - name: AGLint cache
-        uses: actions/cache@v5
+        uses: actions/cache@v6.1.0
         with:
           path: .aglintcache
           key: >