chore: add py3.11 to CI (#39)

Author: bdraco

.github/workflows/ci.yml

@@ -38,6 +38,7 @@ jobs:
         python-version:
           - "3.9"
           - "3.10"
+          - "3.11"
         os:
           - ubuntu-latest
     runs-on: ${{ matrix.os }}