v7 support

[rhugie]

I want to upgrade to mongodb v7 but migrate-mongo doesn't work now, I get an error BSONVersionError: Unsupported BSON version, bson types must be from bson 6.0 or later

Looking in package-lock.json I see it pulls in BSON 4.6.2 which I assume is the issue I'm having. Would be great to support 7 ASAP because the geniuses at MongoDB don't have a downgrade path from 7 to 6

[sylvia-ivy]

@seppevs Is there a time estimate for this being updated? My team and I have run into the same blocker.

Thanks!