brother_ql.devicedependent is deprecated

[M-Saeb]

I tried running the brother_ql_web.py file and I got the following error:

deprecation warning: brother_ql.devicedependent is deprecated and will be removed in a future release

[FriedrichFroebel]

This is just a warning which has been reverted, but as there has not been any official release, this will only disappear if you install the dependency from Git: pklaus/brother_ql@5c2b72b