soc-cocotb-sim submodule update

diff --git a/src/soc/soc-cocotb-sim b/src/soc/soc-cocotb-sim
index cde41ed200c5e1c2cfe264a80ed5ebba7c1005a8..a51b60d6735be5985203c3cc0652db774031057a 160000 (submodule)
--- a/src/soc/soc-cocotb-sim
+++ b/src/soc/soc-cocotb-sim
@@ -1 +1 @@
-Subproject commit cde41ed200c5e1c2cfe264a80ed5ebba7c1005a8
+Subproject commit a51b60d6735be5985203c3cc0652db774031057a