bump gossamer commit

diff --git a/gossamer b/gossamer
index f555766512c041822d31feae5f0be9ac223ba8e0..cc6bd88ca198ebccd8194b607ff88124a8796667 160000 (submodule)
--- a/gossamer
+++ b/gossamer
@@ -1 +1 @@
-Subproject commit f555766512c041822d31feae5f0be9ac223ba8e0
+Subproject commit cc6bd88ca198ebccd8194b607ff88124a8796667