Bump actions/cache from 4.3.0 to 5.0.2

Bumps [actions/cache](https://github.com/actions/cache) from 4.3.0 to 5.0.2.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v4.3.0...v5.0.2)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 5.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/link-check.yaml

@@ -19,7 +19,7 @@ jobs:
         with:
           hugo-version: 'latest'
           extended: true
-      - uses: actions/cache@v4.3.0
+      - uses: actions/cache@v5.0.2
         with:
           path: /tmp/hugo_cache
           key: ${{ runner.os }}-hugomod-${{ hashFiles('**/go.sum') }}
@@ -28,7 +28,7 @@ jobs:
       - name: Build
         run: hugo --minify
       - name: Restore lychee cache
-        uses: actions/cache@v4.3.0
+        uses: actions/cache@v5.0.2
         with:
           path: .lycheecache
           key: cache-lychee-${{ github.sha }}