Bump ci to python3.11 by default

Bump all ci jobs to python 3.11 by default, run builds only on python
3.11 and python 3.12 .

.github/workflows/ci.yaml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ["3.9", "3.10"]
+        python: ["3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v2
@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-           python-version: 3.9
+           python-version: 3.11
       - name: Install Tox and any other packages
         run: |
              python -m pip install -U pip
@@ -51,5 +51,5 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-           python-version: 3.9
+           python-version: 3.11
       - uses: pre-commit/[email protected]

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py39-cov
+envlist = py311-cov
 
 [testenv]
 deps =