Bump carrierwave from 1.3.0 to 1.3.1

Bumps carrierwave from 1.3.0 to 1.3.1.

Changelog

Sourced from carrierwave's changelog.

1.3.1 - 2018-12-29

Fixed

• Fix #url_options_supported? causing nil error(mshibuya 0b9a64a1, #2361)

Commits

• 9d17a44 Version 1.3.1
• 0b9a64a #url_options_supported? breaks when #file is nil
• See full diff in compare view