Log Message:
xournalpp: update to 1.2.1.

## 1.2.1

Bugfixes from various community contributors.

* Added a default toolbar, so that the app does not start without toolbar on
  new installations (#4997, #5011, #5015).
* Added exception handling to color palettes loading to prevent a possible
  crash (#4994, #5016).
* Added an age filter on crash logs reported at startup. Now only crash logs
  no older than one week will be considered relevant (#5022).
* Fixed opening crash logs and opening the directory containing the crash logs.
  This affected the Windows build and (only for directories) the flatpak and
  snap packages on Linux (#4976).
* Changed the link address when sending a bugreport about a recent crash log
  such that the appropriate template from the xournalpp/xournalpp repository
  is used (#5032, #4910, #5084).
* Added a missing double arrow preference to the button configuration dialog,
  therewith also fixing selections below "Draw Arrow" (#4989).
* Fixed occuring negative pressure values that previously resulted in a crash
  due to a failing assertion (#5025, #5028).
* Added options to the command line and preferences to disable the audio system
  used for audio recording (#3905, #3531, #5020, #5068).
* The official release builds are now built in "RelWithDeb" mode as \ 
intended
  before. In particular they will not crash on failing asserts any more (#5042).
* Linux: The official release builds are now compiled with the gtksourceview
  styling for the LaTeX tool (#4996).
* Updated the package description with the new features from v1.2.0 (#5056).