OBS Ubuntu repo signing key expired

[XeCycle]

Describe the bug

Get:6 http://download.opensuse.org/repositories/home:/Prince781/xUbuntu_22.04  InRelease [1530 B]
Err:6 http://download.opensuse.org/repositories/home:/Prince781/xUbuntu_22.04  InRelease
  The following signatures were invalid: EXPKEYSIG 81B67E7F51FDFE41 home:Prince781 OBS Project <home:[email protected]>
Reading package lists... Done
W: GPG error: http://download.opensuse.org/repositories/home:/Prince781/xUbuntu_22.04  InRelease: The following signatures were invalid: EXPKEYSIG 81B67E7F51FDFE41 home:Prince781 OBS Project <home:[email protected]>
E: The repository 'http://download.opensuse.org/repositories/home:/Prince781/xUbuntu_22.04  InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

gpg --list-packets on the key file says

...
:signature packet: algo 1, keyid 81B67E7F51FDFE41
        version 4, created 1603896978, md5len 0, sigclass 0x13
        digest algo 8, begin of digest c3 aa
        hashed subpkt 2 len 4 (sig created 2020-10-28)
        hashed subpkt 27 len 1 (key flags: 03)
        hashed subpkt 9 len 4 (key expires after 2y70d0h0m)
...

It's 2023 today, so yes, expired.

Software OS and version (e.g. Ubuntu 20.04): Ubuntu 22.04 running in WSL2.

(I guess the rest in bug template does not apply)