[Merge] ~slyon/ubuntu-seeds/+git/platform:lunar-mir-pkgconf into ~ubuntu-core-dev/ubuntu-seeds/+git/platform:lunar

[Lukas Märdian]

Review: Approve

pkgconf got promoted to main and migrated to the release pocket. Let's get this merged.
-- 
https://code.launchpad.net/~slyon/ubuntu-seeds/+git/platform/+merge/437267
Your team Ubuntu Core Development Team is subscribed to branch ~ubuntu-core-dev/ubuntu-seeds/+git/platform:lunar.