Added missing zoom-us dependencies

[maxkratz]

I've tried to build the zoom-us Docker container image and got an error output:

dpkg: dependency problems prevent configuration of zoom:
 zoom depends on libxcb-xinerama0; however:
  Package libxcb-xinerama0 is not installed.
 zoom depends on libxkbcommon-x11-0; however:
  Package libxkbcommon-x11-0 is not installed.

dpkg: error processing package zoom (--install):
 dependency problems - leaving unconfigured
Processing triggers for desktop-file-utils (0.26-1) ...
Processing triggers for shared-mime-info (2.0-1) ...
Errors were encountered while processing:
 zoom

The error is basically described in this pull request, which had been untouched for months.

This pull request fixes the installation error(s).

[maxkratz]

Any news on merging this?