Update boto3 from 1.9.168 to 1.9.170

requirements/prod.txt

@@ -122,9 +122,9 @@ billiard==3.5.0.5 \
 bleach==3.1.0 \
     --hash=sha256:213336e49e102af26d9cde77dd2d0397afabc5a6bf2fed985dc35b5d1e285a16 \
     --hash=sha256:3fdf7f77adcf649c9911387df51254b813185e32b2c6619f690b593a617e19fa
-boto3==1.9.168 \
-    --hash=sha256:794a9a4b6a9e40c1ac57a377de609872d28d62afe4295c48cdc1b1c92f96ab8e \
-    --hash=sha256:962b078568cc520869ea2842f307864c9abc30ad5ed160e12b2a89debf220161
+boto3==1.9.170 \
+    --hash=sha256:c24644352e90b2942aa16c0fd2fd06d7ab40718f6afd8226fde1c836640a95c3 \
+    --hash=sha256:db851eaac9808f431f77bf062d44d954233266e35da72b60143bd54de3567988
 celery==4.1.1 \
     --hash=sha256:6fc4678d1692af97e137b2a9f1c04efd8e7e2fb7134c5c5ad60738cdd927762f \
     --hash=sha256:d1f2a3359bdbdfb344edce98b8e891f5fe64f8a11c5a45538ec20ac237c971f5 # pyup: <4.2