Automated Project Update Bot fixes

This merge request was automatically created by the Project Update Bot. It contains the changes from run 11-185727.

src/Normalizer/ContentEntityNormalizer.php

@@ -40,7 +40,7 @@ class ContentEntityNormalizer extends NormalizerBase {
   /**
    * {@inheritdoc}
    */
-  public function normalize($entity, $format = NULL, array $context = []) {
+  public function normalize($entity, $format = NULL, array $context = []): array|bool|string|int|float|null|\ArrayObject {
     $label = '';
     try {
       $label = $entity->label();