increment pytest version

Author: peterdsharpe

.github/workflows/run-pytest.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ '3.8' , '3.11' , '3.12' ]
+        python-version: [ '3.9' , '3.11' , '3.12' ]
 
     steps:
       - uses: actions/checkout@v4