Update from debian/buster for apertis/v2021-updates

xorg-server (2:1.20.4-1+deb10u2) buster-security; urgency=medium

• CVE-2020-14360 CVE-2020-25712

debian/apertis/copyright.yml

@@ -2,5 +2,11 @@
   license: MIT
 .*Makefile.in:
   license: FSFULLR
-hw/dmx/config/parser.c, hw/dmx/config/parser.h, hw/xwin/winprefsyacc.c, hw/xwin/winprefsyacc.h:
+hw/dmx/config/parser.c:
+  override-license: GPL-3+ WITH Bison-exception-2.2
+hw/dmx/config/parser.h:
+  override-license: GPL-3+ WITH Bison-exception-2.2
+hw/xwin/winprefsyacc.c:
+  override-license: GPL-3+ WITH Bison-exception-2.2
+hw/xwin/winprefsyacc.h:
   override-license: GPL-3+ WITH Bison-exception-2.2