Use android build box iamge.

.gitea/workflows/buildAndroid.yaml

@@ -2,18 +2,11 @@ name: Build Android
 on: [pull_request, push]
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-latest-android
     steps:
       - name: Checkout the code
         uses: actions/checkout@v2
 
-      - name: set up JDK
-        uses: actions/setup-java@v3
-        with:
-          java-version: '17'
-          distribution: 'temurin'
-          cache: gradle
-
       - name: Prepare signing
         run: | 
           touch keystore.properties