Bump pytest from 8.3.5 to 9.0.3 in /requirements (#40)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.3.5 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@8.3.5...9.0.3)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/test-requirements.txt

@@ -1,3 +1,3 @@
 flake8==7.2.0
 pytest-cov==6.1.1
-pytest==8.3.5
+pytest==9.0.3