update geoip db

BridgeDB uses maxminddb to get a mapping between IPs and countries, but this DB is not updated anymore. We should use the tor-geoipdb, which will be kept updated.

BridgeDB implements it's own parser for the maxminddb, we'll need to update it to the tor-geoipdb format.

For some context on the tor move away of maxminddb: tpo/core/tor#40224 (closed)