fix: correct aws request/response wrapper types

[simonmcallister0210]

Context

Noticed the AWS request and response types were coming through as unknown on the latest version of the package. This is down to us not including the AWS SDK in our dependencies, they're only in devDependencies. The type we define doesn't have access to it's dependent types in prod

A solution would be to include the AWS SDK libs in dependencies, but then consumers would have to download these monster dependencies. @aws-sdk/client-cognito-identity-provider isn't too bad at 2.38 MB, but aws-sdk is 97.2MB ! Users would also have to see the annoying v2 SDK deprecation warning every time they use this library

Another solution is to only include @aws-sdk/client-cognito-identity-provider in dependencies. After investigating the differences between the request and response types in SDK v2 and v3 I found that they're 99% the same. There's only a couple of small difference which I've documented in the code. This way we can move @aws-sdk/client-cognito-identity-provider into dependencies and give consumers proper access to our "wrapper" types

Changes

• Remove unnecessary AWS SDK v2 type imports in src/types.ts
• Streamline the custom request and response types
• Move @aws-sdk/client-cognito-identity-provider from devDependencies to dependencies

Testing

Before

After