Fix storage of hook url in settings.

CRM/Zapier/Form/ZapHooks.php

@@ -24,7 +24,7 @@ class CRM_Zapier_Form_ZapHooks extends CRM_Core_Form {
       ]
     ]);
 
-    $zapHooks = unserialize(Civi::settings()->get('zapierHooks') ?? '') ?: [];
+    $zapHooks = Civi::settings()->get('zapierHooks') ?? [];
     $this->setDefaults($zapHooks);
 
     // export form elements
@@ -34,11 +34,11 @@ class CRM_Zapier_Form_ZapHooks extends CRM_Core_Form {
 
   public function postProcess() {
     $values = $this->exportValues();
-    $zapHooks = serialize([
+    $zapHooks = [
       'create_contact' => $values['create_contact'] ?? '',
       'update_participant' => $values['update_participant'] ?? '',
-    ]);
-    Civi::settings()->set('zapierHooks', serialize($zapHooks));
+    ];
+    Civi::settings()->set('zapierHooks', $zapHooks);
     CRM_Core_Session::setStatus(E::ts('Zapier hooks are saved.'));
     parent::postProcess();
   }