chore(deps): bump httpx from 0.27.0 to 0.27.2 in /docs_src

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:production
  update-type: version-update:semver-patch
...

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

docs_src/pyproject.toml

@@ -9,7 +9,7 @@ python = "^3.12"
 django = "^5.1.1"
 fastapi = "^0.115.0"
 flask = "^3.0.1"
-httpx = "^0.27.0"
+httpx = "^0.27.2"
 structlog = "^24.4.0"
 tomodachi = "^0.27.2"
 types-aiobotocore = { extras = [