Merge pull request #7950 from mozilla/pyup-update-botocore-1.9.19-to-1.9.20

Update botocore to 1.9.20

requirements/prod.txt

@@ -90,9 +90,9 @@ boto3==1.6.20 \
 celery==4.1.0 \
     --hash=sha256:81a67f0d53a688ec2bc8557bd5d6d7218f925a6f2e6df80e01560de9e28997ec \
     --hash=sha256:77ff3730198d6a17b3c1f05579ebe570b579efb35f6d7e13dba3b1368d068b35
-botocore==1.9.19 \
-    --hash=sha256:8c3df93ad70437c0cd5074af892765c7ed3b9d7814cbd46e332186642046abdd \
-    --hash=sha256:1b70e8824435c87aed06655bb9d1b91b43ae6b187c955f34bcf57866b77b6dea
+botocore==1.9.20 \
+    --hash=sha256:637820dd036d0d1c90f0008f423233536705a3eac80eb555fb8b0f02d1a0cc9d \
+    --hash=sha256:cb8a4218cbbac1244b6ef8f12143d35e08f1ec613b154cb59bde6fb752d513d4
 # chardet is required by requests
 chardet==3.0.4 \
     --hash=sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691 \