FontAwesome 5 introduced new names for some icons as described on
https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4#name-changes



This commit replaces the old names to the new ones.

closes odoo/odoo#35826

Taskid: 2050241
Related: odoo/enterprise#5180
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>