Update charts to 2.15 for master branch

Change-Id: I8ba1c6a587d86cf4ea6c9dd8034026658c8b6e0a
Signed-off-by: Akash Reddy Kankanala <akash.kankanala@radisys.com>
diff --git a/voltha-stack/Chart.yaml b/voltha-stack/Chart.yaml
index f794cb6..1dfe257 100644
--- a/voltha-stack/Chart.yaml
+++ b/voltha-stack/Chart.yaml
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Open Networking Foundation (ONF) and the ONF Contributors
+# Copyright 2020-2025 Open Networking Foundation (ONF) and the ONF Contributors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -30,11 +30,11 @@
 
 # app version is NOT used in this chart for application versions or image tags
 # but represents the voltha release version itself
-appVersion : "2.12"
+appVersion : "2.15"
 
 ## Chart version for package voltha-stack
 ##   Increment when Chart.yaml changes
-version    : "2.12.19"
+version    : "2.15.0"
 
 # -----------------------------------------------------------------------
 # NOTE: Dependencies are chart versions not component/repository version
@@ -43,19 +43,19 @@
 dependencies:
   - name       : voltha
     repository : file://../voltha
-    version    : "2.12.21"
+    version    : "2.15.0"
     condition  : voltha.enabled
   - name       : "voltha-adapter-openonu"
     repository : "file://../voltha-adapter-openonu"
-    version    : "2.12.6"
+    version    : "2.15.0"
     condition  : "voltha-adapter-openonu.enabled"
   - name       : voltha-adapter-openolt
     repository : file://../voltha-adapter-openolt
-    version    : "2.12.8"
+    version    : "2.15.0"
     condition  : voltha-adapter-openolt.enabled
   - name       : voltha-go-controller
     repository : file://../voltha-go-controller
-    version    : "0.1.9"
+    version    : "2.15.0"
     condition  : voltha-go-controller.enabled
 
 # [EOF]