Update QUnit to v1.8.0

diff --git a/test/qunit b/test/qunit
index 14f3acba86e0e0b71a154a8e5250addd4de81074..8a7fc96381b14792ff1c380ffa6682396658a4c2 160000 (submodule)
--- a/test/qunit
+++ b/test/qunit
@@ -1 +1 @@
-Subproject commit 14f3acba86e0e0b71a154a8e5250addd4de81074
+Subproject commit 8a7fc96381b14792ff1c380ffa6682396658a4c2