rgacogne's packager key about to expire

The packager key from @rgacogne (A4CBEA7974898599195E4FEC46EC46F39F3E2EF1) is about to expire on 2022-12-09 (with subkeys expiring on 2022-12-26 & 2022-12-07).

Please extend the expiration date! Afterwards please open a merge request for the updated key in this repository as described in the Modify a Packager Key workflow.

Edited by Christian Hesse
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