contrib DB is not available

[bruno-garcia]

We document a trimmed down backup of the DB for contributors:

nuget-trends/README.md

Line 82 in af55d06

The backup can be grabbed here: [https://contrib.nugettrends.com/nuget-trends-contrib.dump](https://contrib.nugettrends.com/nuget-trends-contrib.dump) and is a compressed _postgres_ database.

That's timing out for download.
The DB backup trimmed down via the script actually has no counts on it.

https://github.com/dotnet/nuget-trends/blob/af55d06cffa7cbf3155323b1e88539301082e5da/scripts/create-contrib-db.sh