audit graphql changelog

[ljharb]

1. manually audit https://docs.github.com/en/graphql/overview/changelog#schema-changes-for-2022-11-15-1 to make sure our schema is up to date, and new fields we can use are added
2. programmatically monitor it if possible and notify us when fields we use are mentioned, and when new fields are added.

[Urigo]

You can introspect the schema and feed it into GraphQL Hive or GraphQL Inspector to see for any changes

[ljharb]

@Urigo thanks, that's helpful! Any chance you'd be interested in PRing in a cron workflow that files an issue for any changes?