Static typing: `parser` utility type hints should reflect primitive types support

[catarinacps]

Static type checker used

pyright/pylance

AWS Lambda function runtime

3.13

Powertools for AWS Lambda (Python) version

latest

Static type checker info

Method "parse" overrides class "BaseEnvelope" in an incompatible manner
  Parameter 3 type mismatch: base parameter is type "type[T@parse]", override parameter is type "type[Model@parse]"
  Return type mismatch: base method returns type "NotImplementedType", override returns type "list[Model@parse | None]"
    Type "T@parse" is not assignable to type "BaseModel"
      "object*" is not assignable to "BaseModel"
    "list[Model@parse | None]" is not assignable to "NotImplementedType"

Code snippet

This is identifiable by analyzing the library's source code itself.

Possible Solution

I've created a PR that tackles this: #8175.

[boring-cyborg]

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