refactor: Updated migration foreign key

Author: ahmadhuss

database/migrations/2021_05_27_103257_create_products_table.php

@@ -18,7 +18,9 @@ public function up()
 
             // Foreign key
             $table->unsignedBigInteger('category_id');
-            $table->foreign('category_id')->references('id')->on('categories');
+            $table->foreign('category_id')->references('id')->on('categories')
+                ->onUpdate('cascade')
+                ->onDelete('cascade');
 
             $table->string('name');
             $table->decimal('price');