Update botocore from 1.12.167 to 1.12.168

requirements/prod.txt

@@ -128,9 +128,9 @@ boto3==1.9.167 \
 celery==4.1.1 \
     --hash=sha256:6fc4678d1692af97e137b2a9f1c04efd8e7e2fb7134c5c5ad60738cdd927762f \
     --hash=sha256:d1f2a3359bdbdfb344edce98b8e891f5fe64f8a11c5a45538ec20ac237c971f5 # pyup: <4.2
-botocore==1.12.167 \
-    --hash=sha256:bba0548c3638877aebe3356819b5235b9d39cd4d2ebac9946979a93e412bb777 \
-    --hash=sha256:d3424b05a13ac38efe225a2f75a72d3f949513980f737001ae9279edd81b1b31
+botocore==1.12.168 \
+    --hash=sha256:675f2b66af486dd02f5825601bb0c8378773999f8705c6f75450849ca41fed80 \
+    --hash=sha256:c3fc314c0e0aa13aa024d272d991e23d37550050abf96b3c7dea889ed1743723
 # chardet is required by requests
 chardet==3.0.4 \
     --hash=sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691 \