Fix gl-icon in ee/app/assets/javascripts/users/identity_verification/components/international_phone_input.vue

from !173401 (comment 2226258619)

The icon on line 304 is designed for use at size 16, it also looks like it should use the 'info' variant.

For more information look at the gl-icon storybook entry: https://gitlab-org.gitlab.io/gitlab-ui/?path=/docs/base-icon--docs

Implementation Guide: Change size to 16 and add info variant Make sure to add screenshots to MR