Update Codegen dependencies and make it stable

[frandiox]

This tries to update codegen dependencies and make it stable.

It is blocked by some bug introduced upstream. The error thrown when generating the demo-store types is: Cannot read properties of null (reading 'union'), from this line.
It seems it can't infer selection nodes when using fragment spreads (around here).
Fixed in dotansimha/graphql-code-generator#9709 . We are also patching this bug until this is merged and released.

[frandiox]

Note: example of problematic fragment that worked on @graphql-codegen/cli@3 but doesn't work in >4 (error :Cannot read properties of null (reading 'union')):

 lines(first: $numCartLines) {
      nodes {
        ...CartLine
      }
   }

[frandiox]

Ready to review! 🙌