update gh actions py versions as well

Author: arska

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     name: "run tox"
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9, pypy3]
+        python-version: [3.8, 3.9, "3.10", 3.11]
 
     steps:
     - uses: actions/checkout@v3
@@ -35,7 +35,7 @@ jobs:
       - uses: "actions/checkout@v3"
       - uses: "actions/setup-python@v4"
         with:
-          python-version: "3.8"
+          python-version: "3.11"
 
       - name: "Install pep517 and twine"
         run: "python -m pip install pep517 twine"