⬆ Bump httpx from 0.24.1 to 0.27.2

Bumps [httpx](https://github.com/encode/httpx) from 0.24.1 to 0.27.2.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](https://github.com/encode/httpx/compare/0.24.1...0.27.2)

---
updated-dependencies:
- dependency-name: httpx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements-tests.txt

@@ -6,7 +6,7 @@ mypy ==1.4.1
 ruff ==0.6.2
 # For FastAPI tests
 fastapi >=0.103.2
-httpx ==0.24.1
+httpx ==0.27.2
 # TODO: upgrade when deprecating Python 3.7
 dirty-equals ==0.6.0
 jinja2 ==3.1.4