Update actions in CI workflow

Use the latest versions, which addresses deprecation warnings.
Use Gradle actions for build/cache and wrapper validation.

Signed-off-by: thc202 <[email protected]>

Author: thc202

.github/workflows/ci.yml

@@ -14,18 +14,12 @@ jobs:
         java: [11]
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-java@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v3
         with:
+          distribution: 'temurin'
           java-version: ${{ matrix.java }}
-      - uses: actions/cache@v2
-        with:
-          path: |
-            ~/.gradle/caches
-            ~/.gradle/wrapper
-          key: ${{ runner.os }}-gradle-${{ matrix.java }}-${{ hashFiles('**/*.gradle*') }}
-          restore-keys: |
-            ${{ runner.os }}-gradle-${{ matrix.java }}-
-            ${{ runner.os }}-gradle-
+      - uses: gradle/wrapper-validation-action@v1
+      - uses: gradle/gradle-build-action@v2
       - run: ./gradlew assemble
       - run: ./gradlew check