[now-python] Use `debug()` from build-utils (#2882)
[now-python] Use `debug()` from build-utils (#2882)

* Use `debug()` from build-utils

* Apply suggestions from code review

Co-Authored-By: Steven <4068f0880b399410602d694b3cc711c8a8f4727e@ceriously.com>
zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli