workflow file try 2

.github/workflows/builder.yml

@@ -15,6 +15,8 @@ jobs:
         sudo apt update -y
         sudo apt install build-essential -y
         
+        sudo apt install software-properties-common -y
+        sudo add-apt-repository ppa:deadsnakes/ppa -y
         sudo apt install python3.9 -y
         sudo rm /usr/bin/python3
         sudo ln -s python3.9 /usr/bin/python3