chore(deps-dev): update isort requirement in /packages/http/httpx

Updates the requirements on [isort](https://github.com/pycqa/isort) to permit the latest version.
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@5.13.2...6.0.0)

---
updated-dependencies:
- dependency-name: isort
  dependency-type: direct:development
...

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

Author: dependabot[bot]

packages/http/httpx/pyproject.toml

@@ -33,7 +33,7 @@ httpx = {extras = ["http2"], version = ">=0.25,<1.0.0"}
 
 [tool.poetry.group.dev.dependencies]
 yapf = ">=0.40.2,<0.44.0"
-isort = "^5.13.2"
+isort = ">=5.13.2,<7.0.0"
 pylint = "^3.2.7"
 mypy = "^1.11.2"
 pytest = "^8.3.2"