Update to the new signing pubkey (Yoga)
Update to the new signing pubkey (Yoga)

Since [1] new key is used to sign artifacts,
let's use the new one.

[1] https://review.opendev.org/c/openstack/releases/+/815550

Change-Id: Id377e9d0f11cb929d65c118393d22a3b4b356961

rdo-infra/releng,rdo-infra/releng