⬆️ Update pytest requirement from <8,>=7 to >=7,<9 (#10)

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@7.0.0...8.3.4)

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

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

dev-requirements.txt

@@ -1,4 +1,4 @@
-pytest>=7,<8
+pytest>=7,<9
 pytest-cov>=4,<5
 pytest-xdist>=3,<4
 hypothesis>=5.5,<7