Merge pull request #342 from tutorcruncher/dependabot/pip/flake8-3.9.1

Bump flake8 from 3.9.0 to 3.9.1

Author: alextford11

tests/requirements.txt

@@ -1,7 +1,7 @@
 attrs==20.3.0
 black==20.8b1
 coverage==5.5
-flake8==3.9.0
+flake8==3.9.1
 isort==5.7.0
 pycodestyle==2.7.0
 pyflakes==2.3.0