Bump actions/cache from 4 to 5 (#319)

Bumps [actions/cache](https://github.com/actions/cache) from 4 to 5.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4...v5)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: '5'
  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>

Author: dependabot[bot]

.github/workflows/test_cache.yml

@@ -15,7 +15,7 @@ jobs:
     name: Test cache
     steps:
       - name: Restore lychee cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: .lycheecache
           key: cache-lychee-${{ github.sha }}