Instead of downloading the full server package and extracting mongocryptd binary from there we could use the mongodb-cryptd- packages like https://downloads.mongodb.com/osx/mongodb-cryptd-macos-x86_64-enterprise-4.4.6.tgz or what is listed on https://www.mongodb.com/download-center/enterprise/releases.

This would be done by conditionally replacing `archive` with `cryptd` if only mongocryptd was requested: https://github.com/mongodb-js/download-url/blob/d3920f605885ff66f2440926114be9acd4685c51/src/index.ts#L230-L241