Build: Update CI Java version

Author: zhanghai

.github/workflows/android.yml

@@ -12,10 +12,10 @@ jobs:
       uses: actions/checkout@v3
       with:
         submodules: true
-    - name: Set up JDK 17
-      uses: actions/setup-java@v3
+    - name: Set up JDK 21
+      uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: '17'
+        java-version: '21'
     - name: Build with Gradle
       run: ./gradlew buildDebug lintVitalRelease