update dependencies of containerd/cri

List generated by running:
`git diff c9d45e6526 19589b4bf9 vendor.conf`

in the containerd/cri repositoru

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/json-iterator/go/reflect_map.go

@@ -249,6 +249,10 @@ type mapEncoder struct {
 }
 
 func (encoder *mapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	if *(*unsafe.Pointer)(ptr) == nil {
+		stream.WriteNil()
+		return
+	}
 	stream.WriteObjectStart()
 	iter := encoder.mapType.UnsafeIterate(ptr)
 	for i := 0; iter.HasNext(); i++ {