Incompatible GraphQL version(s) in peerDependencies

[FilipPyrek]

I've sumbled upon this issue: serverless-appsync/serverless-appsync-simulator#53

And I've discovered in my project is happening this:

• most of the packages are fine with graphql version 14.7.0 and single package needs version 0.13.2
• so npm installs both versions
• the packages are using the new graphql version and one of the packages is using also graphql-scalars and graphql-scalars is using the old version of graphql (0.13.2) ⚠️
• Why using the old version 0.13.2? 🤔
• that is causing this anomaly - Upgrading to 0.7.1 throws Error: GUID must provide "serialize" function serverless-appsync/serverless-appsync-simulator#53 (comment)
• I was wondering why it happened and then I discovered that graphql-scalars has in in it's peerDependencies all these versions ^0.8.0 || ^0.9.0 || ^0.10.0 || ^0.11.0 || ^0.12.0 || ^0.13.0 ||..
• And when I took a look at source code of the graphql ^0.13.0 I could see why is this error happening - Upgrading to 0.7.1 throws Error: GUID must provide "serialize" function serverless-appsync/serverless-appsync-simulator#53 (comment)

So I guess the problem is that by adding GUID.ts the compatibility with older versions than ^14.0.0 was broken.