ref: workaround flake8 B314

[joshuarli]

Right now, black fails to parse this file due to psf/black#768:

$ pre-commit run black --files src/sentry/lint/engine.py      black....................................................................Failed
hookid: black

error: cannot format src/sentry/lint/engine.py: Cannot parse: 175:101:         print('[sentry.lint] Skipping JavaScript formatting because prettier is not installed.', file=sys.stderr)  # noqa: B314
All done! 💥 💔 💥
1 file failed to reformat.

@dcramer This blocks running pre-commit run -a in CI.

Also, even if it were able to blacken this file, it'd be conflicting with flake8 because the noqa: B314 which disallows print statements needs to be placed on the same line as the print call. Black will coerce it to multiple lines.

Easiest solution would to just switch to the appropriate sys write. cc @untitaker because I know you've run into this before.