:art: SimdJSON: use real object type

diff --git a/plug b/plug
index 3cdb9feede115e9c1728ebc93d6de7d08f0e7891..547f7c480eb912307de68039261720ad9de13950 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit 3cdb9feede115e9c1728ebc93d6de7d08f0e7891
+Subproject commit 547f7c480eb912307de68039261720ad9de13950