Moving all references to proto v4

Change-Id: Idbb9119da7ddae136f7ffbbb783429c7e049b3ab
diff --git a/protos/voltha_protos/tech_profile.proto b/protos/voltha_protos/tech_profile.proto
index 7253fa4..7c37fb3 100644
--- a/protos/voltha_protos/tech_profile.proto
+++ b/protos/voltha_protos/tech_profile.proto
@@ -14,7 +14,7 @@
 
 syntax = "proto3";
 
-option go_package = "github.com/opencord/voltha-protos/v3/go/tech_profile";
+option go_package = "github.com/opencord/voltha-protos/v4/go/tech_profile";
 option java_package = "org.opencord.voltha.tech_profile";
 
 package tech_profile;