Updated to Python 3.10 for checks

Author: sliverc

.github/workflows/tests.yml

@@ -43,10 +43,10 @@ jobs:
         tox-env: ["black", "lint", "docs"]
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Python 3.9
+      - name: Set up Python 3.10
         uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: "3.10"
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

tox.ini

@@ -25,13 +25,13 @@ commands =
     pytest --cov --no-cov-on-fail --cov-report xml {posargs}
 
 [testenv:black]
-basepython = python3.9
+basepython = python3.10
 deps =
     -rrequirements/requirements-codestyle.txt
 commands = black --check .
 
 [testenv:lint]
-basepython = python3.9
+basepython = python3.10
 deps =
     -rrequirements/requirements-codestyle.txt
     -rrequirements/requirements-testing.txt
@@ -40,7 +40,7 @@ commands = flake8
 
 [testenv:docs]
 # keep in sync with .readthedocs.yml
-basepython = python3.9
+basepython = python3.10
 deps =
     -rrequirements/requirements-optionals.txt
     -rrequirements/requirements-documentation.txt