MAINT: Update actions/cache action to v5.0.4

Author: renovate[bot]

.github/workflows/github-ci.yaml

@@ -53,7 +53,7 @@ jobs:
         submodules: 'recursive'
     - name: Cache Downloaded Files
       id: cache-downloaded-files
-      uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5.0.3
+      uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
       with:
         path: '**/tests/pdf_cache/*'
         key: cache-downloaded-files