⬆️ backend: Bump @graphql-codegen/cli in /backend/services/core

Bumps [@graphql-codegen/cli](https://github.com/dotansimha/graphql-code-generator/tree/HEAD/packages/graphql-codegen-cli) from 2.15.0 to 5.0.0.
- [Release notes](https://github.com/dotansimha/graphql-code-generator/releases)
- [Changelog](https://github.com/dotansimha/graphql-code-generator/blob/master/packages/graphql-codegen-cli/CHANGELOG.md)
- [Commits](https://github.com/dotansimha/graphql-code-generator/commits/@graphql-codegen/cli@5.0.0/packages/graphql-codegen-cli)

---
updated-dependencies:
- dependency-name: "@graphql-codegen/cli"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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