Change 3.12-dev to 3.12

Author: insolor

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12-dev"]  # TODO: replace 3.12-dev with 3.12
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
       fail-fast: false