mypy warns about invalid types for json argument

I have warnings about invalid types for the json argument, that didn't occur when using types-requests.

The changes in v2.34.1 changed the errors, but did not fix them.

typecheck.py:6: error: Argument "json" to "post" has incompatible type "dict[str, Collection[str]]"; expected "JsonType"  [arg-type]
typecheck.py:9: error: Argument "json" to "post" has incompatible type "dict[str, object]"; expected "JsonType"  [arg-type]

Reproduction Steps

import requests

def fn(d: dict[str, str]) -> None:
    j = {"foo": d, "bar": "hi"}
    requests.post("https://example.com", json=j)

    k = {"foo": d, "bool": True}
    requests.post("https://example.com", json=k)

It seems ok if a literal is used without the intermediate variable:

    requests.post("https://example.com", json={"foo": d, "bar": "hi"})
    requests.post("https://example.com", json={"foo": d, "bool": True})

System Information

{
  "chardet": {
    "version": null
  },
  "charset_normalizer": {
    "version": "3.4.7"
  },
  "cryptography": {
    "version": ""
  },
  "idna": {
    "version": "3.15"
  },
  "implementation": {
    "name": "CPython",
    "version": "3.13.5"
  },
  "platform": {
    "release": "6.12.74+deb13+1-amd64",
    "system": "Linux"
  },
  "pyOpenSSL": {
    "openssl_version": "",
    "version": null
  },
  "requests": {
    "version": "2.34.1"
  },
  "system_ssl": {
    "version": "30500050"
  },
  "urllib3": {
    "version": "2.7.0"
  },
  "using_charset_normalizer": true,
  "using_pyopenssl": false
}