Auto: Migrate to setup-gradle action

Author: FlorianMichael

.github/workflows/build.yml

@@ -9,8 +9,8 @@ jobs:
         uses: actions/checkout@v4
         with:
           persist-credentials: false
-      - name: Validate Gradle Wrapper
-        uses: gradle/actions/wrapper-validation@v4
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
       - name: Set up JDK 21
         uses: actions/setup-java@v4
         with: