:art: SimdJSON handle nulls

diff --git a/plug b/plug
index 257cb4d6e43161abbf899384d6e6a0dcd10c7b5b..66325a031feeea3c2550ca092eba26fe4b7a387e 160000 (submodule)
--- a/plug
+++ b/plug
@@ -1 +1 @@
-Subproject commit 257cb4d6e43161abbf899384d6e6a0dcd10c7b5b
+Subproject commit 66325a031feeea3c2550ca092eba26fe4b7a387e