Bump gidgethub from 3.2.0 to 3.3.0 (#307)

dependabot-preview[bot] · web-flow · commit 818c504aa2b9 · 2020-01-20T05:48:22.000Z
diff --git a/requirements.txt b/requirements.txt
@@ -1,6 +1,6 @@
 cherry_picker==1.3.2
 aiohttp==3.6.2
-gidgethub==3.2.0
+gidgethub==3.3.0
 cachetools==4.0.0
 redis==3.3.11
 celery==4.4.0
