Consider .ini files & config files in Python file changes (#1207)

The files in dev_tools/conf/ should also be tested when checking for
file changes, because configuration file changes may affect pytest and
other behaviors, which in turn can affect CI results.

Author: mhucka

.github/workflows/ci.yaml

@@ -166,6 +166,7 @@ jobs:
                   - '**/CITATION.cff'
             python:
               - '**/*.py'
+              - 'dev_tools/conf/**'
               - 'dev_tools/requirements/deps/*.txt'
               - 'dev_tools/requirements/env/*.txt'
               - 'dev_tools/requirements/max_compat/*.txt'