Update to ubuntu-22.04 on old version run

Author: kellyjonbrazil

.github/workflows/pythonapp.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13, ubuntu-20.04, windows-2019]
+        os: [macos-13, ubuntu-22.04, windows-2019]
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
 
     steps: