scripts: use plain import of contributor_data Relative import failed with: Traceback (most recent call last): File "scripts/update-copyrights.py", line 45, in <module> from . import contributor_data ImportError: attempted relative import with no known parent package Fixed by backing out changeset 2786730e56e0. The pytype problem can be solved differently.

pytest >= 4.6.6, < 5.4
pytest-sugar >= 0.9.2, < 0.10
pytest-benchmark >= 3.2.2, < 3.3
pytest-localserver >= 0.5.0, < 0.6
mock >= 3.0.0, < 4.1
Sphinx >= 1.8.0, < 2.4
WebTest >= 2.0.6, < 2.1
isort == 4.3.21
pyflakes == 2.1.1