Automatic update for python-dbusmock-0.30.1-1.eln134.

Changelog

* Sat Dec 23 2023 Packit <hello@packit.dev> - 0.30.1-1
Over the years, this template has accumulated some hacks and bad API
which made PairDevice()'s handling of the Modalias/Class/Icon properties
buggy and hard to understand:
 * These are *static* device properties, they are not supposed to change
   during pairing.
 * Commit ee29a4403359b6a added these as some kind of "dynamic fallback
   default" when they were not initialized by the caller after
   AddDevice().
 * Commit 59d6af0dca3e silently broke that fallback default by changing
   AddDevice() to set these device properties to empty strings.
 * Commit fae4be7f49c0861 added another really bad API for setting Class
   in PairDevice()(). That API didn't fit into D-Bus (see commit
   8968284e8b which had to make it a non-default parameter) and also
   broke the API, and moreover it is totally unintuitive -- the device
   class has nothing to do with pairing.
Clean up all of these: Set the static property defaults in AddDevice()
right away, so that the caller can adjust them afterwards. Re-drop the
`class_` argument in PairDevice(). Adjust the documentation of
AddDevice() to point out that properties should be changed after calling
that.
Consequently, PairDevice() will stop claiming that the static properties
changed. This also gets rid of some redundant code.