Use Python 3.12 final in workflow.

Author: stefanholek

.github/workflows/python-package.yml

@@ -69,7 +69,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12.0-rc.1", pypy-2.7, pypy-3.10]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12", pypy-2.7, pypy-3.10]
 
     steps:
       - name: Check out project