Update gRPC-Go version to 1.68.0 (grpc#1381)

Author: purnesh42H

config.yaml

@@ -28,7 +28,7 @@ params:
   locale: en_US
   grpc_vers:
     core: v1.66.0
-    go: v1.67.0
+    go: v1.68.0
     java: v1.68.1
     node: "@grpc/[email protected]"
   font_awesome_version: 5.12.1