[SEBA-660] : Adding Igmp support in BbSim

Change-Id: I9f5c7d8ad39ac82850b04e2c997996d6c47b32d2
diff --git a/go.mod b/go.mod
index 410d698..a0814e3 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@
 	github.com/golang/protobuf v1.3.2
 	github.com/google/gopacket v1.1.17
 	github.com/gorilla/mux v1.7.3
-	github.com/grpc-ecosystem/grpc-gateway v1.11.3
+	github.com/grpc-ecosystem/grpc-gateway v1.12.2
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/jhump/protoreflect v1.5.0
 	github.com/looplab/fsm v0.1.0
@@ -19,9 +19,8 @@
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/stretchr/testify v1.4.0 // indirect
-	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80 // indirect
-	google.golang.org/genproto v0.0.0-20190716160619-c506a9f90610
-	google.golang.org/grpc v1.22.1
-	gopkg.in/yaml.v2 v2.2.2
+	google.golang.org/genproto v0.0.0-20190927181202-20e1ac93f88c
+	google.golang.org/grpc v1.27.0
+	gopkg.in/yaml.v2 v2.2.3
 	gotest.tools v2.2.0+incompatible
 )