Updated .github/workflows/run_test.yaml to target py38 and py311 tests

Author: HERA-Observer

.github/workflows/run_test.yaml

@@ -7,7 +7,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy: 
             matrix:
-                python-version: ["3.8.3"]
+                python-version: [3.8, 3.11]
 
         steps:
             - uses: actions/checkout@v3