Recommended Git Versions: Update git version database so statistics are reflected correctly

Updating the git version database will make it so that the data in Recommended Git Versions correctly reflects which versions are in use, and what percentage of connections are coming from vulnerable versions.

Start by locating the git version database and the code or data source behind Recommended Git Versions. Check how version usage and vulnerable-version percentages are calculated; done means the database is updated and the displayed statistics correctly reflect both measures.

Written by the indexing model from the issue text.