fix: gracefully handle pact webhook status when there is no pact yet

Author: bethesque

lib/pact_broker/webhooks/repository.rb

@@ -164,7 +164,11 @@ def delete_triggered_webhooks_by_pact_publication_ids pact_publication_ids
       end
 
       def find_latest_triggered_webhooks_for_pact pact
-        find_latest_triggered_webhooks(pact.consumer, pact.provider)
+        if pact
+          find_latest_triggered_webhooks(pact.consumer, pact.provider)
+        else
+          []
+        end
       end
 
       def find_latest_triggered_webhooks consumer, provider