fix: bump graphql-playground-html and graphql-yoga

Removes [graphql-playground-html](https://github.com/graphcool/graphql-playground). It's no longer used after updating ancestor dependency [graphql-yoga](https://github.com/graphql-hive/graphql-yoga/tree/HEAD/packages/graphql-yoga). These dependencies need to be updated together.


Removes `graphql-playground-html`

Updates `graphql-yoga` from 1.18.3 to 5.18.0
- [Release notes](https://github.com/graphql-hive/graphql-yoga/releases)
- [Changelog](https://github.com/graphql-hive/graphql-yoga/blob/main/packages/graphql-yoga/CHANGELOG.md)
- [Commits](https://github.com/graphql-hive/graphql-yoga/commits/graphql-yoga@5.18.0/packages/graphql-yoga)

---
updated-dependencies:
- dependency-name: graphql-playground-html
  dependency-version: 
  dependency-type: indirect
- dependency-name: graphql-yoga
  dependency-version: 5.18.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]