Bump pytest from 6.2.5 to 7.0.1 (#887)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 6.2.5 to 7.0.1.
- [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...7.0.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

requirements_dev.txt

@@ -5,7 +5,7 @@
 coveralls==3.3.1
 flake8==4.0.1
 pillow==9.0.1
-pytest==6.2.5
+pytest==7.0.1
 pytest-cache==1.0
 pytest-cov==3.0.0
 pytest-mock<3.6.2