Provide Lintian images for all releases
Since !347 (merged) the Lintian job runs by default with the Sid version of Lintian irrespective of what ${RELEASE} is used. If a Debian Developer wants to do quality assurance to a package in an existing release (e.g Bullseye) they can't run the Sid Lintian (currently v2.115) as it will throw way too many errors and warnings than what is reasonable to expect to be fixed in a stable release.
Thus for a Bullseye maintenance it would be better to continue using the Bullseye version of Lintian and focus only on ensuring there are no new errors/warnings compared to what there was previously for the package in Bullseye.
Developers could define in their salsa-ci.yml:
RELEASE: bullseye
SALSA_CI_IMAGES_LINTIAN: ${SALSA_CI_IMAGES}/lintian:bullseyeHowever, for this to work also the actual Lintian image for Bullseye must exist, so change the build matrix to build Lintian images for all releases.
Testing
Before: 34 container images
After: 42 container images
