Bump pytest from 7.0.1 to 8.3.3 (#18)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.0.1 to 8.3.3.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.0.1...8.3.3)

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

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

requirements.txt

@@ -1,3 +1,3 @@
 Pillow==10.3.0
-pytest==7.0.1
+pytest==8.3.3
 pymd6==0.1.1