Update taskcluster from 1.3.0 to 1.3.1 (#2474)

requirements/common.txt

@@ -173,8 +173,8 @@ certifi==2017.4.17 \
 slugid==1.0.7 --hash=sha256:6dab3c7eef0bb423fb54cb7752e0f466ddd0ee495b78b763be60e8a27f69e779
 
 # Used for Taskcluster auth
-taskcluster==1.3.0 \
-    --hash=sha256:e790fac22da8c7d981e1ce869fd27934a4eb1c38f4c8856706f2f33bd9fd4184
+taskcluster==1.3.1 \
+    --hash=sha256:7c5aba1f4279e4bbc0b524a76037dc5b81494c1a817921e9163553d6ad2d4244
 
 graphene-django==1.3 \
     --hash=sha256:6679eaa73768a760aef76e1860a4ca3273db4213f0505dc13cdfa44278e027fc