Update Python version in workflow configuration

Author: pgleeson

.github/workflows/non_omv.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [ 3.7, 3.9 ]
+        python-version: [ "3.12" ]
 
     steps:
     - uses: actions/checkout@v4