chore(deps): update dependency flake8 to v4

renovate-bot · JohnVillalovos · commit 79785f0bee2e · 2021-10-12T13:09:54.000-07:00
diff --git a/requirements-lint.txt b/requirements-lint.txt
@@ -1,5 +1,5 @@
 black==20.8b1
-flake8==3.9.2
+flake8==4.0.1
 isort==5.9.3
 mypy==0.910
 types-PyYAML==5.4.11
