Bump pytest from 7.4.3 to 7.4.4 in /requirements (AtsushiSakai#963)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.4.3 to 7.4.4.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.4.3...7.4.4)

---
updated-dependencies:
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: requirements/requirements.txt

@@ -2,7 +2,7 @@ numpy == 1.26.2
 scipy == 1.11.4
 matplotlib == 3.8.2
 cvxpy == 1.4.1
-pytest == 7.4.3 # For unit test
+pytest == 7.4.4 # For unit test
 pytest-xdist == 3.5.0 # For unit test
 mypy == 1.8.0 # For unit test
 ruff == 0.1.9 # For unit test