Update flake8 from 3.7.7 to 3.7.8
@@ -17,7 +17,7 @@ pytest-sugar==0.9.2 # https://github.com/Frozenball/pytest-sugar
# Code quality
# ------------------------------------------------------------------------------
-flake8==3.7.7 # https://github.com/PyCQA/flake8
+flake8==3.7.8 # https://github.com/PyCQA/flake8
coverage==4.5.3 # https://github.com/nedbat/coveragepy
black==19.3b0 # https://github.com/ambv/black
pylint-django==2.0.10 # https://github.com/PyCQA/pylint-django
