Use Bibliogram instances API rather than hard coding
The Bibliogram instances list is now in a repository rather than a world-writable wiki, so the API should always return trusted data.
If you want to use the convenient API, you must pick an instance that you trust to get the actual list from. bibliogram.art is a reasonable choice. Otherwise you could manually collect the data from the markdown list in the repository, which does not require you to trust anyone.
Endpoint: https://bibliogram.art/api/instances
Docs: https://git.sr.ht/~cadence/bibliogram-docs/tree/master/docs/API:%20Instances.md