MAINT: Update actions/cache action to v4.2.4 (#140)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/github-ci.yaml

@@ -55,7 +55,7 @@ jobs:
         submodules: 'recursive'
     - name: Cache Downloaded Files
       id: cache-downloaded-files
-      uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4.2.3
+      uses: actions/cache@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
       with:
         path: '**/tests/pdf_cache/*'
         key: cache-downloaded-files