Update SMF image to 3c91931

Change-Id: I4166d1b12dc0eaa7075d3786e9d0c500f22d6d5b
diff --git a/5g-control-plane/values.yaml b/5g-control-plane/values.yaml
index b282ed3..b84c25c 100644
--- a/5g-control-plane/values.yaml
+++ b/5g-control-plane/values.yaml
@@ -7,7 +7,7 @@
     init: docker.io/omecproject/pod-init:1.0.0
     amf: registry.aetherproject.org/omecproject/5gc-amf:onf-release3.0.5-9683d5c
     nrf: registry.aetherproject.org/omecproject/5gc-nrf:onf-release3.0.5-13304e8
-    smf: registry.aetherproject.org/omecproject/5gc-smf:onf-release3.0.5-46dfe2d
+    smf: registry.aetherproject.org/omecproject/5gc-smf:onf-release3.0.5-3c91931
     ausf: registry.aetherproject.org/omecproject/5gc-ausf:onf-release3.0.5-be7d4ac
     nssf: registry.aetherproject.org/omecproject/5gc-nssf:onf-release3.0.5-aa3a60b
     pcf: registry.aetherproject.org/omecproject/5gc-pcf:onf-release3.0.5-9f7734b