ci: Use the setup-gradle action (#2214)

- https://github.com/gradle/actions/blob/main/docs/setup-gradle.md#why-use-the-setup-gradle-action
- https://github.com/gradle/actions/releases/tag/v4.0.0-rc.1: wrapper validation is now enabled in the setup-gradle action by default, removing the need to use a separate workflow file with the `gradle/actions/wrapper-validation` action
- https://github.com/gradle/actions/blob/main/docs/setup-gradle.md#incompatibility-with-other-caching-mechanisms

Author: valfirst

.github/workflows/gradle-wrapper-validation.yml

@@ -71,7 +71,9 @@ jobs:
       with:
         distribution: 'zulu'
         java-version: ${{ matrix.java }}
-        cache: 'gradle'
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v4
 
     - name: Build with Gradle
       run: |

.github/workflows/gradle.yml

@@ -12,11 +12,14 @@ jobs:
         with:
           java-version: '11'
           distribution: 'zulu'
-          cache: 'gradle'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
       - name: Publish package
         env:
           MAVEN_USERNAME: ${{ secrets.OSSRH_USERNAME }}
           MAVEN_PASSWORD: ${{ secrets.OSSRH_TOKEN }}
           PGP_SECRET: ${{ secrets.SIGNING_KEY }}
           PGP_PASSPHRASE: ${{ secrets.SIGNING_PASSWORD }}
-        run: ./gradlew publish
+        run: ./gradlew publish