Update Sizzle: attribute values regex tweak

diff --git a/src/sizzle b/src/sizzle
index 683924fb73bafc5447b86cc5a38a4d99108e1196..441c8d4332f690f5ec1941ede65e22861013cfe9 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit 683924fb73bafc5447b86cc5a38a4d99108e1196
+Subproject commit 441c8d4332f690f5ec1941ede65e22861013cfe9