Add python 3.11 to test matrix

Author: gazpachoking

.github/workflows/test.yml

@@ -15,6 +15,7 @@ jobs:
           - "3.8"
           - "3.9"
           - "3.10"
+          - "3.11"
 
     steps:
       - uses: actions/checkout@v3
@@ -35,4 +36,4 @@ jobs:
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       - name: Test with pytest
         run: |
-          pytest tests.py
+          pytest tests.py