Update go dependencies

vendor/google.golang.org/grpc/stats/stats.go

@@ -91,6 +91,8 @@ type InHeader struct {
 	LocalAddr net.Addr
 	// Compression is the compression algorithm used for the RPC.
 	Compression string
+	// Header contains the header metadata received.
+	Header metadata.MD
 }
 
 // IsClient indicates if the stats information is from client side.
@@ -104,6 +106,9 @@ type InTrailer struct {
 	Client bool
 	// WireLength is the wire length of trailer.
 	WireLength int
+	// Trailer contains the trailer metadata received from the server. This
+	// field is only valid if this InTrailer is from the client side.
+	Trailer metadata.MD
 }
 
 // IsClient indicates if the stats information is from client side.
@@ -146,6 +151,8 @@ type OutHeader struct {
 	LocalAddr net.Addr
 	// Compression is the compression algorithm used for the RPC.
 	Compression string
+	// Header contains the header metadata sent.
+	Header metadata.MD
 }
 
 // IsClient indicates if this stats information is from client side.
@@ -159,6 +166,9 @@ type OutTrailer struct {
 	Client bool
 	// WireLength is the wire length of trailer.
 	WireLength int
+	// Trailer contains the trailer metadata sent to the client. This
+	// field is only valid if this OutTrailer is from the server side.
+	Trailer metadata.MD
 }
 
 // IsClient indicates if this stats information is from client side.
@@ -176,6 +186,7 @@ type End struct {
 	EndTime time.Time
 	// Trailer contains the trailer metadata received from the server. This
 	// field is only valid if this End is from the client side.
+	// Deprecated: use Trailer in InTrailer instead.
 	Trailer metadata.MD
 	// Error is the error the RPC ended with. It is an error generated from
 	// status.Status and can be converted back to status.Status using