Bump coverage from 4.5.1 to 4.5.4 (#602)

dependabot-preview[bot] · web-flow · commit 84cbf751bdb6 · 2019-09-21T12:57:02.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,4 @@
-coverage==4.5.1
+coverage==4.5.4
 docker==4.0.2
 flake8==3.5.0
 -e .[sa]
