install source util

Author: patapenka-alexey

.github/workflows/packing.yml

@@ -510,7 +510,7 @@ jobs:
 
       - name: Install test requirements
         run: |
-          apt install -y python3.11-venv
+          apt install -y source python3.11-venv
           python3 -m venv .venv
           source .venv/bin/activate
           pip3 install -r requirements-test.txt