Replace kwargs:dict with kwargs:any

[c-w-feldmann]

In the code kwargs are typed as dict.
According to the python typing manual:

At runtime, the type of a variadic positional parameter (*args) is a tuple, and the type of a variadic keyword parameter (**kwargs) is a dict. However, when annotating these parameters, the type annotation refers to the type of items within the tuple or dict (unless Unpack is used).
Source

This PR adapts the type hints accordingly.

[tpgillam]

Thank you for the contribution! I agree that this is more correct.

@blankjul might want to have final sign-off on merging.

[tpgillam]

I think the same change can be made here as you made further above for *keys.