Use Android SDK runner image for CI

.forgejo/workflows/android.yml

@@ -9,31 +9,17 @@ on:
 
 jobs:
   build:
-    runs-on: forgejo-local
+    runs-on: android-ci
     env:
-      ANDROID_HOME: /opt/android-sdk
-      ANDROID_SDK_ROOT: /opt/android-sdk
       GRADLE_VERSION: 8.10.2
     steps:
       - name: Check out repository
         uses: actions/checkout@v4
 
-      - name: Install build dependencies
+      - name: Install Gradle dependencies
         run: |
           apt-get update
-          apt-get install -y --no-install-recommends ca-certificates curl unzip openjdk-17-jdk
-
-      - name: Install Android SDK
-        run: |
-          mkdir -p "$ANDROID_HOME/cmdline-tools"
-          curl -fsSL https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip -o /tmp/android-tools.zip
-          unzip -q /tmp/android-tools.zip -d /tmp/android-tools
-          mv /tmp/android-tools/cmdline-tools "$ANDROID_HOME/cmdline-tools/latest"
-          yes | "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" --licenses >/dev/null
-          "$ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager" \
-            "platform-tools" \
-            "platforms;android-35" \
-            "build-tools;35.0.0"
+          apt-get install -y --no-install-recommends ca-certificates curl unzip
 
       - name: Install Gradle
         run: |