Use stable Python 3.11 in tests (#641)

Author: 153957

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
       matrix:
         os: [Ubuntu, Windows, macOS]
         python_version:
-          ["3.7", "3.8", "3.9", "3.10", "3.11-dev", "pypy3.7", "pypy3.8", "pypy3.9"]
+          ["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.7", "pypy3.8", "pypy3.9"]
 
     steps:
       - uses: actions/checkout@v3