Update dependency urllib3 to v2.0.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
urllib3 (changelog)	==2.0.2 -> ==2.0.4

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Release Notes

urllib3/urllib3 (urllib3)

### [`v2.0.4`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#204-2023-07-19) [Compare Source](https://togithub.com/urllib3/urllib3/compare/2.0.3...2.0.4) \================== - Added support for union operators to `HTTPHeaderDict` (`#​2254 `\__) - Added `BaseHTTPResponse` to `urllib3.__all__` (`#​3078 `\__) - Fixed `urllib3.connection.HTTPConnection` to raise the `http.client.connect` audit event to have the same behavior as the standard library HTTP client (`#​2757 `\__) - Relied on the standard library for checking hostnames in supported PyPy releases (`#​3087 `\__) ### [`v2.0.3`](https://togithub.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#203-2023-06-07) [Compare Source](https://togithub.com/urllib3/urllib3/compare/2.0.2...2.0.3) \================== - Allowed alternative SSL libraries such as LibreSSL, while still issuing a warning as we cannot help users facing issues with implementations other than OpenSSL. (`#​3020 `\__) - Deprecated URLs which don't have an explicit scheme (`#​2950 `\_) - Fixed response decoding with Zstandard when compressed data is made of several frames. (`#​3008 `\__) - Fixed `assert_hostname=False` to correctly skip hostname check. (`#​3051 `\__)

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