escape * to prevent topics that contain it from not matching

[Daenara]

Fix for issue in #226

[koenvervloesem]

The code linter (which you can also run locally with make check) fails with:

/home/runner/work/rhasspy-hermes-app/rhasspy-hermes-app/rhasspyhermes_app/__init__.py:566:54: W605 invalid escape sequence '\*'

Can you check whether it still matches your topic with * if you change to r-strings as suggested by Invalid escape sequence 'x' (W605)?

[koenvervloesem]

Thanks!