use 3.11, not 3.11-dev

Author: samuelcolvin

.github/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu, macos, windows]
-        python: ['3.7', '3.8', '3.9', '3.10', '3.11-dev']
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11']
 
     env:
       PYTHON: ${{ matrix.python }}