Fix hints tests by changing the test signer chain for one that is only valid for...

diff --git a/test/data b/test/data
index 30996eaaa1fec27cce09bf987b8d1604293f8e68..4646df21d9c2a5729b549c7dcbb33be622bf3ba7 160000 (submodule)
--- a/test/data
+++ b/test/data
@@ -1 +1 @@
-Subproject commit 30996eaaa1fec27cce09bf987b8d1604293f8e68
+Subproject commit 4646df21d9c2a5729b549c7dcbb33be622bf3ba7