[CI] Update gradle/gradle-build-action

Replace gradle/gradle-build-action by gradle/gradle-build-action, which
supersedes it since v3. The previous version used a deprecated version
of Node.

.github/workflows/tests.yml

@@ -173,7 +173,7 @@ jobs:
         distribution: 'temurin'
         java-version: ${{ matrix.java-version }}
     - name: Set up Gradle ${{ matrix.gradle-version }} 
-      uses: gradle/gradle-build-action@40b6781dcdec2762ad36556682ac74e31030cfe2 # v2.5.1
+      uses: gradle/actions/setup-gradle@417ae3ccd767c252f5661f1ace9f835f9654f2b5 # v3.1.0
       with:
         gradle-version: ${{ matrix.gradle-version }}
     - name: Install Jep ${{ matrix.jep-version }} 
@@ -201,4 +201,4 @@ jobs:
         cat ../output.log
         exit_code=$(cat ../output.log | grep exit | awk '{print $NF}')
         exit $exit_code
- 
+