deps/Makefile: Update titan.ProtocolModules.BSSMAP to new rebased master reference

The master branch in osmocom's gerrit repository has been rebased on top
of current upstream master, hence the commit hash changed. Update it.

Related: OS#6011
Change-Id: Ife9dba3fc98d287d71b2334453dd9ce71471ddcb
diff --git a/deps/Makefile b/deps/Makefile
index 9bdfb8e..b8b072e 100644
--- a/deps/Makefile
+++ b/deps/Makefile
@@ -89,7 +89,7 @@
 titan.ProtocolEmulations.SCCP_commit=	 	17a894fc6620a0df11d0d98c897fb66168276b16
 titan.ProtocolModules.BSSAPP_v7.3.0_commit=	R.2.A-4-g20cfaf8
 titan.ProtocolModules.BSSGP_v13.0.0_commit=	e97d92a8b66bec399babea52f593771b76cb175a
-titan.ProtocolModules.BSSMAP_commit=		24f967b2f77bfdd2e6eabf1e82fa76239095f772
+titan.ProtocolModules.BSSMAP_commit=		e03923ec75e0c31a44b322cb75f6a192aad114a2
 titan.ProtocolModules.DNS_commit=		R.7.B
 titan.ProtocolModules.GRE_commit=		R.2.A-5-g654c446
 titan.ProtocolModules.GTP_v13.5.0_commit=	54219599037626c675610d3a44433d01af264fbb