Don't use Python 3.12 with Black (in ci_format_checks.yml) (#769)

Author: mhucka

.github/workflows/ci_format_checks.yml

@@ -65,7 +65,7 @@ jobs:
       - name: Set up Python with caching of pip dependencies
         uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
           cache: pip
           cache-dependency-path: dev-requirements.txt