Heroku: Heroku renamed fields in the Postgres Premium-0 limits (disk_size to disk, connection_limit to connections).

{"ram":"4 GB","disk_size":"64 GB","connection_limit":"120"} → {"ram":"4 GB","disk":"64 GB","connections":"120"}

Heroku renamed fields in the Postgres Premium-0 limits (disk_size to disk, connection_limit to connections). The values stayed the same: 4 GB RAM, 64 GB disk, 120 connections.