Update dependency httpx to v0.27.2

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
httpx (changelog)	0.27.0 -> 0.27.2

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Release Notes

encode/httpx (httpx)

### [`v0.27.2`](https://togithub.com/encode/httpx/blob/HEAD/CHANGELOG.md#0272-27th-August-2024) [Compare Source](https://togithub.com/encode/httpx/compare/0.27.1...0.27.2) ##### Fixed - Reintroduced supposedly-private `URLTypes` shortcut. ([#​2673](https://togithub.com/encode/httpx/issues/2673)) ### [`v0.27.1`](https://togithub.com/encode/httpx/blob/HEAD/CHANGELOG.md#0271-27th-August-2024) [Compare Source](https://togithub.com/encode/httpx/compare/0.27.0...0.27.1) ##### Added - Support for `zstd` content decoding using the python `zstandard` package is added. Installable using `httpx[zstd]`. ([#​3139](https://togithub.com/encode/httpx/issues/3139)) ##### Fixed - Improved error messaging for `InvalidURL` exceptions. ([#​3250](https://togithub.com/encode/httpx/issues/3250)) - Fix `app` type signature in `ASGITransport`. ([#​3109](https://togithub.com/encode/httpx/issues/3109))

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