ci: add comment

Author: dshemetov

.github/workflows/create-release.yml

@@ -57,6 +57,8 @@ jobs:
               src/client/packaging/pypi/**
       - name: Bump Python versions if client files changed
         if: steps.changed-py.outputs.any_changed == 'true'
+        # _ignored_arg_ below is required because of tool quirk
+        # https://github.com/c4urself/bump2version/issues/22
         run: |
           cd src/client/packaging/pypi
           bump2version --allow-dirty --new-version ${{ steps.version.outputs.next_tag }} _ignored_arg_