Status: The MR https://salsa.debian.org/java-team/mariadb-connector-java/-/merge_requests/1 was merged 4 years ago but the project https://salsa.debian.org/java-team/mariadb-connector-java does not have pipelines enabled, and thus the Salsa-CI hasn't been running.
I did confirm by running the CI at https://salsa.debian.org/mariadb-team/mariadb-connector-java/-/pipelines that it works, so there is no technical reason not to have CI enabled in the repository.