Rerun test actions when .python-version changes

PiperOrigin-RevId: 733767291
Change-Id: I1df26169802fc7377f596dc053317a696b34d258

Author: jagapiou

.github/workflows/test-concordia.yml

@@ -20,6 +20,7 @@ on:
       - '.github/actions/install/action.yml'
       - '.github/workflows/test-concordia.yml'
       - '.pylintrc'
+      - '.python-version'
       - 'bin/install.sh'
       - 'concordia/**'
       - 'pyproject.toml'

.github/workflows/test-examples.yml

@@ -22,6 +22,7 @@ on:
       - '.github/actions/install/action.yml'
       - '.github/workflows/test-examples.yml'
       - '.pylintrc'
+      - '.python-version'
       - 'bin/convert_notebooks.sh'
       - 'bin/install.sh'
       - 'concordia/**'