ci: output aab to release

Author: BenderBlog

.github/workflows/release_for_android.yaml

@@ -50,7 +50,8 @@ jobs:
           files: >
             build/app/outputs/flutter-apk/app-armeabi-v7a-release.apk,
             build/app/outputs/flutter-apk/app-arm64-v8a-release.apk,
-            build/app/outputs/flutter-apk/app-x86_64-release.apk
+            build/app/outputs/flutter-apk/app-x86_64-release.apk,
+            build/app/outputs/bundle/release/app-release.aab
           prerelease: false
           tag_name: ${{ github.event.inputs.tag_name }}
           token: ${{ secrets.RELEASE_TOKEN }}