ci: isolate Android SDK from spaced Windows user paths

.gitea/workflows/android.yml

@@ -20,6 +20,9 @@ jobs:
           java-version: '21'
       - name: Set up Android SDK
         uses: android-actions/setup-android@v3
+        env:
+          ANDROID_HOME: ${{ runner.temp }}/android-sdk
+          ANDROID_SDK_ROOT: ${{ runner.temp }}/android-sdk
         with:
           packages: 'platform-tools platforms;android-37 build-tools;37.0.0'
           log-accepted-android-sdk-licenses: false