Fix Gradle version for build-gradle job to match wrapper (8.14.4)

Author: IvanHargreaves

.github/workflows/java.yml

@@ -79,6 +79,8 @@ jobs:
         distribution: 'semeru'
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v4
+      with:
+        gradle-version: 8.14.4
     - name: Build with Gradle
       run: gradle build -Pjava_version=${{ matrix.jdk }}