Test on more recent Python builds

Author: SylvainDe

.github/workflows/my_github_action.yml

@@ -114,6 +114,7 @@ jobs:
         - '3.13.0-alpha.4'
         - '3.13.0-alpha.5'
         - '3.13.0-alpha.6'
+        - '3.13.0-beta.1'
         - 'pypy-2.7'
         - 'pypy-2.7-nightly'
         - 'pypy-3.6' # the latest available version of PyPy that supports Python 3.6