Update pynello to 2.0.2

[ultrara1n]

Description:

There was an update some time ago for the package, introducing the public api and marking the private as deprecated.

I had a look at the new public api and there are some things to figure out before changing.
The main differences are:

• using of client_id, so you account doesn't get blocked if you are using it in HA
• short_id was removed
• activity was removed
  • worst thing, you are not able to identify a ringing bell easy as before

As long as the private api is still working, we should leave it there. Maybe they will add recent activity in the future.

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass