Bug#945962: libgl1: still uses Priority: extra

[Thorsten Glaser <tg@mirbsd.de>]

Package: libgl1
Version: 1.1.0-1+b1
Severity: normal

Please change Priority extra to optional, in accordance with latest
Policy, as to not make packages depending on libgl1 but of a conforming
priority violate Policy’s requirement of not depending on packages with
a lower priority.

-- System Information:
Debian Release: bullseye/sid
  APT prefers buildd-unstable
  APT policy: (500, 'buildd-unstable'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.3.0-1-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_CRAP
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C (charmap=UTF-8)
Shell: /bin/sh linked to /bin/lksh
Init: sysvinit (via /sbin/init)

Versions of packages libgl1 is related to:
pn  libgl1-nvidia-glx-any  <none>