Run tests when setup.cfg changes

Author: aiudirog

.github/workflows/tests.yml

@@ -7,6 +7,7 @@ on:
       - '**.py'
       - '**.yml'
       - 'requirements.txt'
+      - 'setup.cfg'
   schedule:
     # Test master every Saturday at midnight to verify dependencies
     - cron:  '0 0 * * 6'