post planning should receive and return a dict

[winglian]

the input is a dict parsed from json here: https://github.com/Significant-Gravitas/Auto-GPT/blob/master/autogpt/agent/agent.py#L95, and is subsequently expected to be a dict here: https://github.com/Significant-Gravitas/Auto-GPT/blob/master/autogpt/agent/agent.py#L102-L103

[Apollyon81]

It was not clear what this is for and how to apply it.

[Pwuts]

Dict[Any, Any] is equivalent to Dict, but it can be made more specific:

Suggested change

	def post_planning(self, response: Dict[Any, Any]) -> Dict[Any, Any]:
	def post_planning(self, response: Dict[str, Any]) -> Dict[str, Any]:

Same for the other 2 instances.