Bump UPF and pfcp-agent image

Change-Id: I70113759ec3cac9a5431cdf43bf36ef9431c05b3
diff --git a/omec/omec-user-plane/values.yaml b/omec/omec-user-plane/values.yaml
index cd01432..c248a4a 100644
--- a/omec/omec-user-plane/values.yaml
+++ b/omec/omec-user-plane/values.yaml
@@ -5,8 +5,8 @@
 images:
   tags:
     init: docker.io/omecproject/pod-init:1.0.0
-    bess: registry.aetherproject.org/proxy/omecproject/upf-epc-bess:master-471b06a
-    pfcpiface: registry.aetherproject.org/proxy/omecproject/upf-epc-pfcpiface:master-471b06a
+    bess: registry.aetherproject.org/proxy/omecproject/upf-epc-bess:master-de36ff8
+    pfcpiface: registry.aetherproject.org/proxy/omecproject/upf-epc-pfcpiface:master-de36ff8
   pullPolicy: IfNotPresent
   # Secrets must be manually created in the namespace.
   pullSecrets: