Update values.yaml

Author: pawan-mehta-dt

charts/devtron/values.yaml

@@ -24,7 +24,7 @@ global:
 extraManifests: []
 installer:
   repo: "devtron-labs/devtron"
-  release: "v1.2.1-rc.0"
+  release: "v1.2.1"
   registry: ""
   image: inception
   tag: 473deaa4-185-21582