This is a general question that should be investigated.
We want to make sure the same processes in CI are setup for the Wikibase extension (& other wikibase related extensions) in terms of mediawiki-vendor checks that are already in place for mediawiki core itself.
The general case that needs to be covered.
- mediawiki-vendor specifies version 1.0.0 of LIBA
- wikibase specifies ~1.0 of LIBA
- wikibase is updated to require ~2.0 of LIBA
- what happens?