chore(pip): bump httpx from 0.27.0 to 0.27.2 (#558)

Bumps [httpx](https://github.com/encode/httpx) from 0.27.0 to 0.27.2.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.27.0...0.27.2)

---
updated-dependencies:
- dependency-name: httpx
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/dev.txt

@@ -7,5 +7,5 @@ ruff~=0.6
 pre-commit>=2.15.0
 msgpack>=1.0.5
 numpy<2
-httpx==0.27.0
+httpx==0.27.2
 httpx-sse==0.4.0