Add flavor to name of artifact

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

.github/workflows/assembleFlavors.yml

@@ -33,6 +33,6 @@ jobs:
         uses: actions/upload-artifact@c7d193f32edcb7bfad88892161225aeda64e9392 # v4.0.0
         if: ${{ always() }}
         with:
-          name: Nextcloud-APK
+          name: Nextcloud-${{ matrix.flavor }}-APK
           path: app/build/outputs/apk/**/**/*.apk
           retention-days: 5