rebase: bump k8s.io/kubernetes from 1.26.2 to 1.27.2

Bumps [k8s.io/kubernetes](https://github.com/kubernetes/kubernetes) from 1.26.2 to 1.27.2.
- [Release notes](https://github.com/kubernetes/kubernetes/releases)
- [Commits](https://github.com/kubernetes/kubernetes/compare/v1.26.2...v1.27.2)

---
updated-dependencies:
- dependency-name: k8s.io/kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/k8s.io/apiserver/plugin/pkg/audit/log/backend.go

@@ -0,0 +1,104 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package log
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	auditinternal "k8s.io/apiserver/pkg/apis/audit"
+	"k8s.io/apiserver/pkg/audit"
+)
+
+const (
+	// FormatLegacy saves event in 1-line text format.
+	FormatLegacy = "legacy"
+	// FormatJson saves event in structured json format.
+	FormatJson = "json"
+
+	// PluginName is the name of this plugin, to be used in help and logs.
+	PluginName = "log"
+)
+
+// AllowedFormats are the formats known by log backend.
+var AllowedFormats = []string{
+	FormatLegacy,
+	FormatJson,
+}
+
+type backend struct {
+	out     io.Writer
+	format  string
+	encoder runtime.Encoder
+}
+
+var _ audit.Backend = &backend{}
+
+func NewBackend(out io.Writer, format string, groupVersion schema.GroupVersion) audit.Backend {
+	return &backend{
+		out:     out,
+		format:  format,
+		encoder: audit.Codecs.LegacyCodec(groupVersion),
+	}
+}
+
+func (b *backend) ProcessEvents(events ...*auditinternal.Event) bool {
+	success := true
+	for _, ev := range events {
+		success = b.logEvent(ev) && success
+	}
+	return success
+}
+
+func (b *backend) logEvent(ev *auditinternal.Event) bool {
+	line := ""
+	switch b.format {
+	case FormatLegacy:
+		line = audit.EventString(ev) + "\n"
+	case FormatJson:
+		bs, err := runtime.Encode(b.encoder, ev)
+		if err != nil {
+			audit.HandlePluginError(PluginName, err, ev)
+			return false
+		}
+		line = string(bs[:])
+	default:
+		audit.HandlePluginError(PluginName, fmt.Errorf("log format %q is not in list of known formats (%s)",
+			b.format, strings.Join(AllowedFormats, ",")), ev)
+		return false
+	}
+	if _, err := fmt.Fprint(b.out, line); err != nil {
+		audit.HandlePluginError(PluginName, err, ev)
+		return false
+	}
+	return true
+}
+
+func (b *backend) Run(stopCh <-chan struct{}) error {
+	return nil
+}
+
+func (b *backend) Shutdown() {
+	// Nothing to do here.
+}
+
+func (b *backend) String() string {
+	return PluginName
+}