Bump buildkit to master and fix versions incompatible with go mod 1.13

Bump github.com/gogo/googleapis to v1.3.2
Bump github.com/docker/cli to master

Signed-off-by: Silvin Lubecki <silvin.lubecki@docker.com>

vendor/github.com/moby/buildkit/frontend/gateway/pb/caps.go

@@ -19,6 +19,19 @@ const (
 	CapReadDir                 apicaps.CapID = "readdir"
 	CapStatFile                apicaps.CapID = "statfile"
 	CapImportCaches            apicaps.CapID = "importcaches"
+
+	// CapProtoRefArray is a capability to return arrays of refs instead of single
+	// refs. This capability is only for the wire format change and shouldn't be
+	// used in frontends for feature detection.
+	CapProtoRefArray apicaps.CapID = "proto.refarray"
+
+	// CapReferenceOutput is a capability to use a reference of a solved result as
+	// an llb.Output.
+	CapReferenceOutput apicaps.CapID = "reference.output"
+
+	// CapFrontendInputs is a capability to request frontend inputs from the
+	// LLBBridge GRPC server.
+	CapFrontendInputs apicaps.CapID = "frontend.inputs"
 )
 
 func init() {
@@ -92,4 +105,25 @@ func init() {
 		Enabled: true,
 		Status:  apicaps.CapStatusExperimental,
 	})
+
+	Caps.Init(apicaps.Cap{
+		ID:      CapProtoRefArray,
+		Name:    "wire format ref arrays",
+		Enabled: true,
+		Status:  apicaps.CapStatusExperimental,
+	})
+
+	Caps.Init(apicaps.Cap{
+		ID:      CapReferenceOutput,
+		Name:    "reference output",
+		Enabled: true,
+		Status:  apicaps.CapStatusExperimental,
+	})
+
+	Caps.Init(apicaps.Cap{
+		ID:      CapFrontendInputs,
+		Name:    "frontend inputs",
+		Enabled: true,
+		Status:  apicaps.CapStatusExperimental,
+	})
 }