Ever since the base: core setting was added to snapcraft.yaml, builds have been reporting missing stage-packages.
In practice this seems to have no impact, but snapcraft 3.11 should fix the error and ensure that libraries link against the correct core snap libs:
https://forum.snapcraft.io/t/new-stage-packages-requirements-after-setting-base/15761
We should therefore rebuild all recent releases (1.18+) once snapcraft 3.11 goes into the stable release channel.