build(deps-dev): update pytest requirement

Updates the requirements on [pytest](https://github.com/pytest-dev/pytest) to permit the latest version.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.0...9.0.3)

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

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

Author: dependabot[bot]

requirements-dev.txt

@@ -1,5 +1,5 @@
 # Development and CI dependencies.
 # Runtime dependencies (requests, urllib3) are bundled with the Datadog Agent.
-pytest>=9.0,<10.0
+pytest>=9.0.3,<10.0
 requests>=2.33.1,<3.0
 ruff>=0.11,<1.0