(Update) Http2ServerPush Middleware 🚀

- prevent duplicate header links

app/Http/Middleware/Http2ServerPush.php

@@ -61,6 +61,7 @@ class Http2ServerPush
                 return $this->buildLinkHeaderString($url);
             })
             ->filter()
+            ->unique()
             ->take($limit)
             ->implode(',');