Fix missing dot in grpc service host validation in the schema.

Signed-off-by: Aditya Raisinghani <aditya.ajeet@gmail.com>

Author: adi2412

schema/workflow.yaml

@@ -310,7 +310,7 @@ $defs:
                     type: string
                     title: WithGRPCServiceHost
                     description: The hostname of the GRPC service to call.
-                    pattern: ^[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?$
+                    pattern: ^[a-zA-Z0-9](?:[a-zA-Z0-9-.]{0,61}[a-zA-Z0-9])?$
                   port:
                     type: integer
                     title: WithGRPCServicePost