Chore: Fix Url Validator Deprecation Warning
Chore: Fix Url Validator Deprecation Warning

Because:
* Using the shovel `<<` operator to add an error to an ActiveModel::Errors message array is deprecated.
* A warning was appearing everytime we ran the tests.

TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject,TheOdinProject/theodinproject