build(deps): bump actions/cache from 4 to 5 (#20017)

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

.github/workflows/monthly-check.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - name: Restore lychee cache
       id: restore-cache
-      uses: actions/cache/restore@v4
+      uses: actions/cache/restore@v5
       with:
         path: .lycheecache
         key: cache-lychee-${{ github.sha }}
@@ -67,7 +67,7 @@ jobs:
       run: gh issue close ${{ steps.last-issue.outputs.issue-number }}
 
     - name: Save lychee cache
-      uses: actions/cache/save@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+      uses: actions/cache/save@9255dc7a253b0ccc959486e2bca901246202afeb # v5.0.1
       if: always()
       with:
         path: .lycheecache