Add pivotSynced event listener to flush cache

Author: d8vjork

src/Traits/ModelCaching.php

@@ -75,6 +75,10 @@ public static function bootCachable()
         //     $instance->checkCooldownAndFlushAfterPersisting($instance);
         // });
 
+        static::pivotSynced(function ($instance, $secondInstance, $relationship) {
+            $instance->checkCooldownAndFlushAfterPersisting($instance, $relationship);
+        });
+
         static::pivotAttached(function ($instance, $secondInstance, $relationship) {
             $instance->checkCooldownAndFlushAfterPersisting($instance, $relationship);
         });