releasing aether-roc-umbrella 1.4.9 for 4.0.0 gui updates

Change-Id: I11ba9e316ac79406a71ad6a171b874073e52358d
diff --git a/aether-roc-gui/values.yaml b/aether-roc-gui/values.yaml
index 76687f4..4465786 100644
--- a/aether-roc-gui/values.yaml
+++ b/aether-roc-gui/values.yaml
@@ -10,7 +10,7 @@
 
 image:
   repository: onosproject/aether-roc-gui
-  tag: v0.7.25
+  tag: v0.7.26
   pullPolicy: IfNotPresent
   pullSecrets: []