Merge pull request #15 from cl33t/renovate/actions-cache-4.x

Update actions/cache action to v4

Author: cl33t

.github/workflows/android.yml

@@ -21,7 +21,7 @@ jobs:
         cache: gradle
 
     - name: Cache Gradle packages
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: |
           ~/.gradle/caches