update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/sigs.k8s.io/kustomize/kyaml/yaml/merge2/smpdirective_string.go

@@ -0,0 +1,26 @@
+// Code generated by "stringer -type=smpDirective -linecomment"; DO NOT EDIT.
+
+package merge2
+
+import "strconv"
+
+func _() {
+	// An "invalid array index" compiler error signifies that the constant values have changed.
+	// Re-run the stringer command to generate them again.
+	var x [1]struct{}
+	_ = x[smpUnknown-0]
+	_ = x[smpReplace-1]
+	_ = x[smpDelete-2]
+	_ = x[smpMerge-3]
+}
+
+const _smpDirective_name = "unknownreplacedeletemerge"
+
+var _smpDirective_index = [...]uint8{0, 7, 14, 20, 25}
+
+func (i smpDirective) String() string {
+	if i < 0 || i >= smpDirective(len(_smpDirective_index)-1) {
+		return "smpDirective(" + strconv.FormatInt(int64(i), 10) + ")"
+	}
+	return _smpDirective_name[_smpDirective_index[i]:_smpDirective_index[i+1]]
+}