Use ruff instead of flake8

[gaborbernat]

• Fix broken issue link and bump tools
• Use ruff instead of flake8

[gaborbernat]

As far as I can tell, you've got a mix of manual changes and automatically generated changes, as well as functional changes and stylistic changes, all rolled into a single commit.

Nope, all was done automatically; minus a very few that ruff required to pass. ruff check --fix automatically applies most of the changes, hard to separate them out 🤷 and probably not worth the effort.

[godlygeek]

It's very, very difficult to review this when all in one commit lines have been moved and changed, with some changes having been done manually and others having been done by automated tools. I'd like at least 4 separate commits here:

1. The configuration changes to start using ruff instead of flake8 and isort
2. The changes automatically made by ruff check --fix
3. The changes automatically made by pyproject-fmt
4. The changes manually made to the versions of our declared dependencies

Plus separate commits for any other manual changes I didn't notice.

[gaborbernat]

Let's forget it, too much effort. I'll spend my effort on other projects.

[gaborbernat]

Thanks for the review though 🙏