Update of SMF & PCF images, gnbsim helm chart fix

Change-Id: Id9b00361978e062f2946892b0c26d7de3a222ba6
diff --git a/5g-ran-sim/Chart.yaml b/5g-ran-sim/Chart.yaml
index 669fea9..f8b2a6b 100644
--- a/5g-ran-sim/Chart.yaml
+++ b/5g-ran-sim/Chart.yaml
@@ -8,4 +8,4 @@
 name: 5g-ran-sim
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 0.4.7
+version: 0.4.8