GPG error:
http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_20.04
 InRelease: The following signatures were invalid: EXPKEYSIG 4D64390375060AA4
devel:kubic OBS Project <devel:kubic@build.opensuse.org>
E: The repository
'http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_20.04
 InRelease' is not signed.

---

pub   rsa2048 2018-08-03 [SC] [expired: 2022-12-06]
      2472 D6D0 D2F6 6AF8 7ABA  8DA3 4D64 3903 7506 0AA4
uid           [ expired] devel:kubic OBS Project
<devel:kubic@build.opensuse.org>

Bug ID	1207081
Summary	EXPKEYSIG 4D64390375060AA4
Classification	openSUSE
Product	openSUSE Distribution
Version	Leap 15.5
Hardware	Other
OS	All
Status	NEW
Severity	Major
Priority	P5 - None
Component	Security
Assignee	security-team@suse.de
Reporter	jay@opendna.com
QA Contact	qa-bugs@suse.de
Found By	---
Blocker	---