feat: use a slightly more strict type for AnyJson

[tonyandrewmeyer]

Adjust AnyJson so that the type of the nested list/dict is also defined.

This should avoid errors like this:

/home/tameyer/code/operator/test/test_testing.py
  /home/tameyer/code/operator/test/test_testing.py:7060:17 - error: Type of "action" is partially unknown
    Type of "action" is "(name: str, params: Mapping[str, str | bool | dict[Unknown, Unknown] | int | float | list[Unknown]] | None = None, id: str | None = None) -> _Event" (reportUnknownMemberType)
1 error, 0 warnings, 0 informations 

[james-garner-canonical]

Looks good to me