Try Ubuntu 20.04, python 3.8

Author: joseph-hellerstein

.github/workflows/github-actions.yml

@@ -3,14 +3,16 @@ on: [push]
 jobs:
   Run-tests:
     #runs-on: ubuntu-latest
-    runs-on: Ubuntu 22.04
+    #runs-on: Ubuntu 22.04
+    runs-on: Ubuntu 20.04
     steps:
     - uses: actions/checkout@v3
-    - name: Set up Python 3.9
+    - name: Set up Python
       uses: actions/setup-python@v4
       with:
           #python-version: '3.9'
-          python-version: '3.12'
+          #python-version: '3.12'
+          python-version: '3.8'
       env:
           AGENT_TOOLSDIRECTORY: /opt/hostedtoolcache
     - name: Install