Bump flake8 from 6.1.0 to 7.0.0 in /{{cookiecutter.repo_name}} (#20)

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

Author: dependabot[bot]

{{cookiecutter.repo_name}}/dev-requirements.txt

@@ -1,6 +1,6 @@
 -r requirements.txt
 black==23.12.1
-flake8==6.1.0
+flake8==7.0.0
 flake8-debugger==4.1.2
 isort==5.13.2
 pdbpp==0.10.3