rename 312 tests

Author: robertjwilson

.github/workflows/python-app-312.yml

@@ -1,7 +1,7 @@
 # This workflow will install Python dependencies, run tests and lint with a single version of Python
 # For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions
 
-name: Linux tests
+name: Python 3.12 tests
 
 defaults:
   run: