pip prod(deps): update pytest requirement from <8.5,>=7.2 to >=7.2,<9.1

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@7.2.0...9.0.0)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-testing.txt

@@ -1,4 +1,4 @@
-pytest>=7.2,<8.5
+pytest>=7.2,<9.1
 pytest-runner<6.0.2
 pytest-cov<7.0.1
 flake8-pyproject>=1.2.3,<1.2.4