Bump diff and graphql-config in /packages/cli

Removes [diff](https://github.com/kpdecker/jsdiff). It's no longer used after updating ancestor dependency [graphql-config](https://github.com/kamilkisiela/graphql-config). These dependencies need to be updated together.


Removes `diff`

Updates `graphql-config` from 4.0.1 to 4.5.0
- [Release notes](https://github.com/kamilkisiela/graphql-config/releases)
- [Changelog](https://github.com/graphql-hive/graphql-config/blob/master/CHANGELOG.md)
- [Commits](graphql-hive/graphql-config@v4.0.1...v4.5.0)

---
updated-dependencies:
- dependency-name: diff
  dependency-version: 
  dependency-type: indirect
- dependency-name: graphql-config
  dependency-version: 4.5.0
  dependency-type: indirect
...

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Author: dependabot[bot]