This commit bumps the pycmus version used by the cmus component. There
was a bug in the previous version used, 1.0.0, when running in local
mode. This was caused by a mtreinish/pycmus#1 and also was reported in
the home-assistant forums (but not as an issue):
https://community.home-assistant.io/t/cant-install-cmus-component/7961
Version 0.1.1 of pycmus fixes this issue so it should work properly for
users running cmus and home-assistant on the same machine.