Update rightmove API dependencies to release/v0.20

api/go.mod

@@ -4,7 +4,7 @@ go 1.16
 
 require (
 	github.com/golang/protobuf v1.4.3
-	gitlab.mashroom.com/mashroom/backend/common/api v0.0.0-20211213122854-6bffe476d045
+	gitlab.mashroom.com/mashroom/backend/common/api v0.0.0-20211215235118-cf64c22a11d0
 	google.golang.org/grpc v1.29.1
 	google.golang.org/protobuf v1.24.0
 )