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

from !173401 (comment 2226258607)

This icon is designed for use at size 16.

The gl-icon on line 155 seems like it is for displaying information and should use a 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 change variant to "info". make sure to add screenshots to MR