Bump flake8 from 6.1.0 to 7.0.0

Bumps [flake8](https://github.com/pycqa/flake8) from 6.1.0 to 7.0.0.
- [Commits](PyCQA/flake8@6.1.0...7.0.0)

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

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

pyproject.toml

@@ -15,7 +15,7 @@ requests = "2.*"
 [tool.poetry.dev-dependencies]
 coverage = "^7.2"
 isort = "^5.11"
-flake8 = { version = "^6.1.0", python = "^3.8.1" }
+flake8 = { version = "^7.0.0", python = "^3.8.1" }
 black = "==23.3.0"
 
 [build-system]