Bump cross-fetch and graphql-config

Removes [cross-fetch](https://github.com/lquixada/cross-fetch). 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 `cross-fetch`

Updates `graphql-config` from 3.0.3 to 3.4.0
- [Release notes](https://github.com/kamilkisiela/graphql-config/releases)
- [Changelog](https://github.com/kamilkisiela/graphql-config/blob/master/CHANGELOG.md)
- [Commits](kamilkisiela/graphql-config@v3.0.3...v3.4.0)

---
updated-dependencies:
- dependency-name: cross-fetch
  dependency-type: indirect
- dependency-name: graphql-config
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>