gradle.yml: Use setup-java cache functionality

Use cache function of setup-java and remove the
`cache` action.

.github/workflows/gradle.yml

@@ -14,19 +14,14 @@ jobs:
     steps:
       - name: Git checkout
         uses: actions/checkout@v4
-      - name: Set up JDK
+      - name: Set up Java
         uses: actions/setup-java@v4
         with:
           distribution: ${{ matrix.distribution }}
           # When installing multiple JDKs, the last JDK installed is the default and will be used to run Gradle itself
           java-version: |
             23
-      - name: Cache Gradle packages
-        uses: actions/cache@v4
-        with:
-          path: ~/.gradle/caches
-          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle') }}
-          restore-keys: ${{ runner.os }}-gradle
+          cache: 'gradle'
       - name: Install Nix
         uses: cachix/install-nix-action@v30
         with: