Closes https://github.com/astral-sh/ruff/issues/8076
Follow-up to #8358
Doubles the amount of ecosystem checks we do, adding separate groups for
the stable sections.
We're likely to run into GitHub comment length restrictions if there are
significant deviations. However, it should not be common for changes in
stable and preview to occur at the same time, nor should it be common
for linter and formatter changes to occur at the same time.
* Replace the unmaintained actions-rs/cargo that github actions
complains about using an old node version with plain cargo (this was the
original motivation for this PR)
* Use taiki-e/install-action to install critcmp directly
* Use a rust 1.70 nightly toolchain for udeps
* Cache python package build (this should cut a good chunk of ci time)
* yaml formatting courtesy of pycharm
Test Plan: CI itself
The Benchmark results aren't formatted properly if the ecosystem check finds differences because the ecosystem check doesn't emit a trailing newline.
This PR adds the trailing newline to the ecosystem check script.
