Merge pull request #109 from maxmind/greg/fix-action

Fix 3.10 action

Author: horgh

setup.cfg

@@ -17,7 +17,7 @@ python =
     3.7: py37
     3.8: py38
     3.9: py39
-    "3.10": py310,black,lint,flake8,mypy
+    3.10: py310,black,lint,flake8,mypy
 
 [testenv:{py37,py38,py39,py310}-test]
 deps = pytest