GraphQL can`t determine input type for file in upload file resolver for NestJS
Hi! Thanks for spending your time on this module!
I'm working with NestJS and Graphql and I need to upload files to Apollo Server. But after changing this package graphql showing this error

`Error: Cannot determine a GraphQL input type nullfor the "file".`

So can you help me, how should I specify the type of file in this case?
Before updating to version v15 all worked as expected

I've updated imports to current version but it didn't help

`import { FileUpload, GraphQLUpload } from 'graphql-upload/GraphQLUpload.js';`

<img width="426" alt="image" src="https://user-images.githubusercontent.com/61110165/171006980-d32b861b-3233-4323-b580-f0ee2cc6114b.png">



