deps: Update dependency httpx to v0.26.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
httpx (changelog)	==0.25.2 -> ==0.26.0

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Release Notes

encode/httpx (httpx)

### [`v0.26.0`](https://togithub.com/encode/httpx/blob/HEAD/CHANGELOG.md#0260-20th-December-2023) [Compare Source](https://togithub.com/encode/httpx/compare/0.25.2...0.26.0) ##### Added - The `proxy` argument was added. You should use the `proxy` argument instead of the deprecated `proxies`, or use `mounts=` for more complex configurations. ([#​2879](https://togithub.com/encode/httpx/issues/2879)) ##### Deprecated - The `proxies` argument is now deprecated. It will still continue to work, but it will be removed in the future. ([#​2879](https://togithub.com/encode/httpx/issues/2879)) ##### Fixed - Fix cases of double escaping of URL path components. Allow / as a safe character in the query portion. ([#​2990](https://togithub.com/encode/httpx/issues/2990)) - Handle `NO_PROXY` envvar cases when a fully qualified URL is supplied as the value. ([#​2741](https://togithub.com/encode/httpx/issues/2741)) - Allow URLs where username or password contains unescaped '@​'. ([#​2986](https://togithub.com/encode/httpx/issues/2986)) - Ensure ASGI `raw_path` does not include URL query component. ([#​2999](https://togithub.com/encode/httpx/issues/2999)) - Ensure `Response.iter_text()` cannot yield empty strings. ([#​2998](https://togithub.com/encode/httpx/issues/2998))

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[dpebot]

/gcbrun

[dpebot]

/gcbrun