Bump pytest from 6.2.5 to 9.0.3

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 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@6.2.5...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]

requirements.txt

@@ -1,4 +1,4 @@
-pytest==6.2.5
+pytest==9.0.3
 sympy==1.7.1
 scipy==1.5.4
 PyYAML==5.4.1