Update boto3 from 1.9.75 to 1.9.77

requirements/prod.txt

@@ -296,9 +296,9 @@ whitenoise==3.3.1 \
     --hash=sha256:9d81515f2b5b27051910996e1e860b1332e354d9e7bcf30c98f21dcb6713e0dd
 django-haystack==2.8.1 \
     --hash=sha256:8b54bcc926596765d0a3383d693bcdd76109c7abb6b2323b3984a39e3576028c
-boto3==1.9.75 \
-    --hash=sha256:8cb94f08158f5fb5f28fa4e94be9ab5cd03e63a4056b220c65edc39a13e6c5ad \
-    --hash=sha256:e3f01b76a6ed8abf7e1cce631933268bb1cef82b4e1677dbb1c8d97aae759150
+boto3==1.9.77 \
+    --hash=sha256:0e25dd84d0e97c32200103588b8e935c8fba887b96beb955b222be5ddf380cd4 \
+    --hash=sha256:3539636d0c883b9dfc0188bec3a1016cb6da1cdf3d4a4d77b54260b10a8d6e65
 botocore==1.12.77 \
     --hash=sha256:e1c9dfbf52e430b2cce7a90b539f97cf4587dffeff535c243c42d97323fa1bdc \
     --hash=sha256:0fea3d60ed866cb622b34c2b1bff0e7b9ebcde6be5e0f6769f354f2ed5c9a602