PHPstan update

Author: pdphilip

src/Schema/ManagesDefaultMigrations.php

@@ -258,15 +258,15 @@ public function morphs($name, $indexName = null): void
     /**
      * {@inheritdoc}
      */
-    public function nullableTimestamps($precision = 0)
+    public function nullableTimestamps($precision = 0): void
     {
         $this->timestamps($precision);
     }
 
     /**
      * {@inheritdoc}
      */
-    public function timestamps($precision = 0)
+    public function timestamps($precision = 0): void
     {
         $this->timestamp('created_at');
         $this->timestamp('updated_at');