Su6

Fix

* Upgrade deprecated ruff usage ([`106d67a`](https://github.com/robinvandernoord/su6-checker/commit/106d67a247695869e623904bc1ca66a81b91506b))

Fix

* Try to find executables via `python -m` as a fallback, e.g. when installed via pipx ([`5174ac0`](https://github.com/robinvandernoord/su6-checker/commit/5174ac0b46c26e7db0f1f29194e71603195234ce))

Fix

* `su6 list` now also shows yellow circles for uninstalled tools ([`518ed84`](https://github.com/robinvandernoord/su6-checker/commit/518ed84583936ea8875b75df74e0c9bcca3389c2))

Fix

* Pytest --convention option (also via config) ([`b1669ac`](https://github.com/robinvandernoord/su6-checker/commit/b1669ac40448ce93707025daeea3a41f1a3e2522))

Feature

* **config:** You can now add [tool.su6.default-flags] for each tool ([`d8c8034`](https://github.com/robinvandernoord/su6-checker/commit/d8c8034ccd39d572843f532b4b97ae8e48562dd7))

Documentation

* **readme:** Fixed toc ([`28ca2b4`](https://github.com/robinvandernoord/su6-checker/commit/28ca2b466e16de68d3a312a7290572583668fa05))

Feature

* Allow --exclude for `all` and `fix` to skip specific checkers ([`27dd5b3`](https://github.com/robinvandernoord/su6-checker/commit/27dd5b3bffe8553c986a1dc574a8f72ca57233f1))