Bump pytest in /packages/http-client-python/tests/requirements

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.3.2 to 9.0.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.2...9.0.3)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

packages/http-client-python/tests/requirements/base.txt

@@ -1,5 +1,5 @@
 # Base test dependencies
-pytest==8.3.2
+pytest==9.0.3
 pytest-xdist>=3.5.0
 pytest-asyncio>=0.14.0
 aiohttp