Change logs for xubuntu-community-artwork source package in Groovy

xubuntu-community-artwork (20.04.0) focal; urgency=medium

  * Include winners from the Xubuntu 20.04 Community Contest
  * d/compat, d/control:
    - Bump debhelper to 12, drop d/compat
  * d/control:
    - Bump Standards-Version to 4.5.0
    - Set Rules-Requires-Root: no
    - Drop Breaks/Replaces for 16.04

 -- Sean Davis <email address hidden>  Sun, 05 Apr 2020 20:29:57 -0400