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:production
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -42,7 +42,7 @@ email = "[email protected]"
 # TODO(cookiecutter): Remove and add more optional dependencies if appropriate
 [project.optional-dependencies]
 dev-flake8 = [
-  "flake8 == 6.1.0",
+  "flake8 == 7.0.0",
   "flake8-docstrings == 1.7.0",
   "flake8-pyproject == 1.2.3",  # For reading the flake8 config from pyproject.toml
   "pydoclint == 0.3.9",