Issue #3428556: Automated Drupal 11 compatibility fixes for config_readonly

config_readonly.info.yml

@@ -2,4 +2,4 @@ name: 'Configuration Read-only'
 type: module
 description: 'Enables making the active configuration store read-only to prevent configuration changes on a Drupal site.'
 package: Configuration
-core_version_requirement: ^9.1 || ^10
+core_version_requirement: ^9.5 || ^10 || ^11

src/EventSubscriber/ReadOnlyFormSubscriber.php

@@ -106,7 +106,7 @@ class ReadOnlyFormSubscriber implements EventSubscriberInterface {
   /**
    * {@inheritdoc}
    */
-  public static function getSubscribedEvents() {
+  public static function getSubscribedEvents(): array {
     $events = [];
     $events[ReadOnlyFormEvent::NAME][] = ['onFormAlter', 200];
     return $events;