CLC-2053 Fix bug in development.yml logging configuration

Another fix to https://github.com/ets-berkeley-edu/calcentral/commit/afc757e42f11b123838adaf6c5f4e70378c2532d

The attempted change to developer.yml was a no-op, because the new "logger" definition added at the top was superseded by the existing "logger" definition farther down.