Bump pytest-flake8 from 1.2.2 to 1.3.0

Bumps [pytest-flake8](https://github.com/coherent-oss/pytest-flake8) from 1.2.2 to 1.3.0.
- [Release notes](https://github.com/coherent-oss/pytest-flake8/releases)
- [Changelog](https://github.com/coherent-oss/pytest-flake8/blob/main/NEWS.rst)
- [Commits](coherent-oss/pytest-flake8@v1.2.2...v1.3.0)

---
updated-dependencies:
- dependency-name: pytest-flake8
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]