Apply 2 suggestion(s) to 2 file(s)

core/modules/system/system.install

@@ -1715,7 +1715,7 @@ function _system_advisories_requirements(array &$requirements): void {
 /**
  * Update length of menu_tree fields url and route_param_key from 255 to 2048.
  */
-function system_update_11001() {
+function system_update_11001(): void {
   $schema = \Drupal::database()->schema();
   $spec = [
     'description' => 'The external path this link points to (when not using a route).',

core/modules/system/tests/src/Functional/Update/MenuTreeStorageSchemaUpdateTest.php

@@ -21,7 +21,7 @@ class MenuTreeStorageSchemaUpdateTest extends UpdatePathTestBase {
    *
    * @var \Drupal\Core\Database\Connection
    */
-  protected $connection;
+  protected Connection $connection;
 
   /**
    * {@inheritdoc}