Handle invalid URL for DAST Site Profile

This Merge Request fix the validation for dast site profile url

Changelog: changed
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/80170

ee/app/services/app_sec/dast/site_tokens/find_or_create_service.rb

@@ -12,7 +12,7 @@ module AppSec
           return success_response(existing_validation.dast_site_token, existing_validation.state) if existing_validation
 
           find_or_create_dast_site_token
-        rescue URI::InvalidURIError
+        rescue Addressable::URI::InvalidURIError
           error_response('Invalid target_url')
         end
 

ee/spec/services/app_sec/dast/site_tokens/find_or_create_service_spec.rb

@@ -59,7 +59,7 @@ RSpec.describe AppSec::Dast::SiteTokens::FindOrCreateService do
         let_it_be(:target_url) { 'http://bogus:broken' }
 
         it 'communicates failure' do
-          expect(subject).to have_attributes(status: :error, message: ['Url is blocked: URI is invalid'])
+          expect(subject).to have_attributes(status: :error, message: 'Invalid target_url')
         end
 
         it 'does not create a dast_site_validation' do