feat: Simplify Android build workflow by removing JDK setup and Gradle caching steps

.gitea/workflows/android.yaml

@@ -15,27 +15,12 @@ on:
 jobs:
   build:
     runs-on: linux
+    container:
+      image: cimg/android:2024.01
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
 
-      - name: Set up JDK 17
-        uses: actions/setup-java@v4
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-
-      - name: Cache Gradle packages
-        uses: actions/cache@v5
-        with:
-          path: |
-            ~/.gradle/caches
-            ~/.gradle/wrapper
-          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle.kts', '**/gradle-wrapper.properties') }}
-          restore-keys: |
-            ${{ runner.os }}-gradle-
-          if-no-files-found: ignore
-
       - name: Make gradlew executable
         run: chmod +x ./gradlew