In MediaMixin.user_medias the user_id parameter is int, but accepts a user_pk string

[zrbecker]

I believe for the user_medias method, the user_id: int parameter should be user_pk: str since there is no id field on the Users model in types.py, and the pk field is a str.

I had been using the pk without issue, but recently turned on typing on my project, and have to convert these from str to int to make typing error go away, but it seems like it was set as int by mistake.

There are a few other methods in this file that accept a user_id: int parameter that probably also require an update for typing to be consistent.

https://github.com/adw0rd/instagrapi/blob/f1f3175e4eb130f46dc3626211e92cabc954eabb/instagrapi/mixins/media.py#L652-L666

https://github.com/adw0rd/instagrapi/blob/f1f3175e4eb130f46dc3626211e92cabc954eabb/instagrapi/types.py#L20-L33