fix Android build tests

Lately this action has been running out of disk space, this is an attempt on fixing this issue.

.github/workflows/android-ubuntu.yml

@@ -5,7 +5,6 @@ on:
     branches:
       - main
   pull_request:
-
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -94,9 +93,13 @@ jobs:
 
       # Cache apk for both directories
       - name: Cache apk
-        uses: actions/cache/save@v3
+        uses: actions/cache@v3
         env:
           cache-name: cache-apk
         with:
           path: ${{ matrix.directory }}/android/app/build/outputs/apk/debug/app-debug.apk
           key: apk-${{ github.sha }}
+
+      # Clean up after the build to free up space
+      - name: Clean up build directories
+        run: rm -rf ${{ matrix.directory }}/android/app/build