Add --quiet option to isort command

[d1618033]

• closes DOC: Fix isort output in CI #30974
• tests added / passed
• passes black pandas
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

[alimcmaster1]

What does the output look like whenever an import is incorrectly sorted? Let’s push a commit here (you can mess up import ordering in any file) so we can double check all looks as expected on github actions

[d1618033]

@alimcmaster1 done. the output looks like this in case of an error:

Check import format using isort
##[error]ERROR: /home/runner/work/pandas/pandas/pandas/_config/config.py Imports are incorrectly sorted.
Check import format using isort DONE

[alimcmaster1]

LGTM - thanks. cc @datapythonista

[datapythonista]

Did you check if errors are still displayed? If that's the case, this lgtm.

Thanks!

[d1618033]

@datapythonista The errors are still displayed.
This is a snippet from the output of this commit where I changed the order of the imports to verify that errors are still being displayed (the CI logs seem to have been deleted, unfortunately)

[datapythonista]

Thanks for researching and fixing this!