Bump redis from 3.3.6 to 3.3.7 (#261)

dependabot-preview[bot] · web-flow · commit b9f28c3d6813 · 2019-08-14T06:04:07.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -2,6 +2,6 @@ cherry_picker==1.3.2
 aiohttp==3.5.4
 gidgethub==3.1.0
 cachetools==3.1.1
-redis==3.3.6
+redis==3.3.7
 celery==4.3.0
 sentry-sdk==0.10.2
