Bump redis from 3.3.11 to 3.4.0 (#311)

dependabot-preview[bot] · web-flow · commit c8c2344ddec6 · 2020-01-31T05:41:38.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -2,6 +2,6 @@ cherry_picker==1.3.2
 aiohttp==3.6.2
 gidgethub==3.3.0
 cachetools==4.0.0
-redis==3.3.11
+redis==3.4.0
 celery==4.4.0
 sentry-sdk==0.14.1
