Update botocore to 1.15.13 (#13636)
Update botocore to 1.15.13 (#13636)

* Update botocore from 1.15.12 to 1.15.13

* Update prod.txt

Co-authored-by: Andrew Williamson <54e2b4f7b7b59d88924ec1826fca3d274bcb79e5@mozilla.com>

eviljeff/olympia,bqbn/addons-server,wagnerand/addons-server,eviljeff/olympia,wagnerand/addons-server,bqbn/addons-server,mozilla/olympia,mozilla/olympia,diox/olympia,mozilla/olympia,mozilla/olympia,mozilla/addons-server,mozilla/addons-server,eviljeff/olympia,diox/olympia,mozilla/addons-server,diox/olympia,bqbn/addons-server,mozilla/addons-server,diox/olympia,wagnerand/addons-server,eviljeff/olympia,bqbn/addons-server,wagnerand/addons-server