Added python3.9 to e2e workflow

Author: Bobbins228

Diff for: .github/workflows/e2e_tests.yaml

@@ -43,6 +43,7 @@ jobs:
           sudo rm -rf /opt/ghc
           sudo rm -rf "/usr/local/share/boost"
           sudo rm -rf "$AGENT_TOOLSDIRECTORY"
+          sudo apt install python3.9
           docker rmi $(docker image ls -aq)
           echo "Final status:"
           df -h