Install bubblewrap in test environment

Author: RobertRosca

.github/workflows/tests.yml

@@ -25,6 +25,9 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    - name: Install bubblewrap
+      run: sudo apt update -y && sudo apt install bubblewrap -y
+
     - name: Cache APT Packages
       uses: awalsh128/[email protected]
       with: