groupConfiguration request for the PreTokenGeneration Lambda should be a list, not a dict

[seanfdnn]

As per the pre-token generation data structure on the AWS docs:
https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-token-generation.html

The JSON request to the pre-token generation token should have groupConfiguration as a list, but cognito-local currently has it implemented as a dictionary.

cognito-local/src/services/triggers/preTokenGeneration.ts

Line 35 in d04506e

groupConfiguration: {

[seanfdnn]

Upon investigation, it appears as if the AWS-provided types match the current cognito-local implementation and it's actually the AWS documentation that is incorrect? Does anyone have any knowledge to confirm which is correct?