Update dependency test/httpx to v0.26.0

[renovate]

This PR contains the following updates:

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

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Release Notes

encode/httpx (test/httpx)

v0.26.0

Compare Source

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)

Deprecated

• The proxies argument is now deprecated. It will still continue to work, but it will be removed in the future. (#​2879)

Fixed

• Fix cases of double escaping of URL path components. Allow / as a safe character in the query portion. (#​2990)
• Handle NO_PROXY envvar cases when a fully qualified URL is supplied as the value. (#​2741)
• Allow URLs where username or password contains unescaped '@​'. (#​2986)
• Ensure ASGI raw_path does not include URL query component. (#​2999)
• Ensure Response.iter_text() cannot yield empty strings. (#​2998)

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