Document Maven version warning
🔥 Problem
From #325749 (comment 1308829837): Maven doesn't allow specific characters in the version string of maven packages.
However, the build itself will not fail. This means that artifacts with malformed versions can be pushed.
The GitLab Maven Repository relies on a structure format to extract the package name and the package version. Malformed versions will end up in a buggy behavior for that extraction.
🚒 Solution
- Document that the GitLab Maven Repository doesn't support such malformed versions