This update for libredwg fixes the following issues:

Update to release 0.12.5 [boo#1193372] [CVE-2021-28237]

* Restricted accepted DXF objects to all stable and unstable
  classes, minus MATERIAL, ARC_DIMENSION, SUN, PROXY*. I.e.
  most unstable objects do not allow unknown DXF codes anymore.
  This fixed most oss-fuzz errors.