Update code-generator to v0.26.0

client/vendor/k8s.io/code-generator/cmd/go-to-protobuf/protobuf/cmd.go

@@ -30,7 +30,6 @@ import (
 
 	flag "github.com/spf13/pflag"
 
-	"k8s.io/code-generator/pkg/util"
 	"k8s.io/gengo/args"
 	"k8s.io/gengo/generator"
 	"k8s.io/gengo/namer"
@@ -56,8 +55,7 @@ type Generator struct {
 func New() *Generator {
 	sourceTree := args.DefaultSourceTree()
 	common := args.GeneratorArgs{
-		OutputBase:       sourceTree,
-		GoHeaderFilePath: util.BoilerplatePath(),
+		OutputBase: sourceTree,
 	}
 	defaultProtoImport := filepath.Join(sourceTree, "k8s.io", "kubernetes", "vendor", "github.com", "gogo", "protobuf", "protobuf")
 	cwd, err := os.Getwd()

client/vendor/k8s.io/code-generator/cmd/go-to-protobuf/protobuf/parser.go

@@ -25,7 +25,6 @@ import (
 	"go/parser"
 	"go/printer"
 	"go/token"
-	"io/ioutil"
 	"os"
 	"reflect"
 	"strings"
@@ -35,7 +34,7 @@ import (
 
 func rewriteFile(name string, header []byte, rewriteFn func(*token.FileSet, *ast.File) error) error {
 	fset := token.NewFileSet()
-	src, err := ioutil.ReadFile(name)
+	src, err := os.ReadFile(name)
 	if err != nil {
 		return err
 	}