Heroku: Heroku renamed the included-spec fields for Postgres Private-7 from disk_size and connection_limit to disk and connecti…

{"ram":"244 GB","disk_size":"2 TB","connection_limit":"500"} → {"ram":"244 GB","disk":"2 TB","connections":"500"}

Heroku renamed the included-spec fields for Postgres Private-7 from disk_size and connection_limit to disk and connections. The values were unchanged at 244 GB RAM, 2 TB disk and 500 connections.