Collect Julia advisories

[pombredanne]

• See https://github.com/mbauman/AdvisoryDB.jl by @mbauman
• Is uses the OSV format https://github.com/mbauman/AdvisoryDB.jl/blob/main/packages/General/GitForge/GHSA-g2xx-229f-3qjm.json

[mbauman]

This would be great… but don’t do it yet!

That repo is still in flux and the identifiers and advisories themselves are likely to change. It’ll be hosted on an official Julia org once it’s ready for consumption by downstream databases.