Remove deprecations

Author: dereuromark

src/Model/Behavior/JsonableBehavior.php

@@ -88,7 +88,7 @@ public function initialize(array $config): void {
  *
  * @return void
  */
-public function beforeFind(EventInterface $event, SelectQuery $query, ArrayObject $options, bool $primary) {
+public function beforeFind(EventInterface $event, SelectQuery $query, ArrayObject $options, bool $primary): void {
 $query->formatResults(function (CollectionInterface $results) {
 return $results->map(function ($row) {
 if (!$row instanceof Entity) {
@@ -130,7 +130,7 @@ public function decodeItems(EntityInterface $entity) {
  *
  * @return void
  */
-public function beforeSave(EventInterface $event, EntityInterface $entity, ArrayObject $options) {
+public function beforeSave(EventInterface $event, EntityInterface $entity, ArrayObject $options): void {
 $fields = $this->_getMappedFields();
 
 foreach ($fields as $map => $field) {