Include more labels in CHANGELOG sections (#15566)
## Summary
This PR updates Rooster config to include more labels, specifically:
* Include
[`diagnostics`](https://github.com/astral-sh/ruff/labels/diagnostics),
[`docstring`](https://github.com/astral-sh/ruff/labels/docstring),
[`fixes`](https://github.com/astral-sh/ruff/labels/fixes) and
[`isort`](https://github.com/astral-sh/ruff/labels/isort) for "Rule
changes" section
* Use
[`performance`](https://github.com/astral-sh/ruff/labels/performance)
for "Performance" section. We already have included "Performance"
section in various version, so let's make it official :)
* Ignore [`testing`](https://github.com/astral-sh/ruff/labels/testing)
label
The following is open:
* [`suppression`](https://github.com/astral-sh/ruff/labels/suppression)
