rebase: bump k8s.io/klog/v2 from 2.30.0 to 2.40.1

Bumps [k8s.io/klog/v2](https://github.com/kubernetes/klog) from 2.30.0 to 2.40.1.
- [Release notes](https://github.com/kubernetes/klog/releases)
- [Changelog](https://github.com/kubernetes/klog/blob/main/RELEASE.md)
- [Commits](https://github.com/kubernetes/klog/compare/v2.30.0...v2.40.1)

---
updated-dependencies:
- dependency-name: k8s.io/klog/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

vendor/k8s.io/klog/v2/klog_file.go

@@ -22,9 +22,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"os/user"
 	"path/filepath"
-	"runtime"
 	"strings"
 	"sync"
 	"time"
@@ -57,38 +55,6 @@ func init() {
 	}
 }
 
-func getUserName() string {
-	userNameOnce.Do(func() {
-		// On Windows, the Go 'user' package requires netapi32.dll.
-		// This affects Windows Nano Server:
-		//   https://github.com/golang/go/issues/21867
-		// Fallback to using environment variables.
-		if runtime.GOOS == "windows" {
-			u := os.Getenv("USERNAME")
-			if len(u) == 0 {
-				return
-			}
-			// Sanitize the USERNAME since it may contain filepath separators.
-			u = strings.Replace(u, `\`, "_", -1)
-
-			// user.Current().Username normally produces something like 'USERDOMAIN\USERNAME'
-			d := os.Getenv("USERDOMAIN")
-			if len(d) != 0 {
-				userName = d + "_" + u
-			} else {
-				userName = u
-			}
-		} else {
-			current, err := user.Current()
-			if err == nil {
-				userName = current.Username
-			}
-		}
-	})
-
-	return userName
-}
-
 // shortHostname returns its argument, truncating at the first period.
 // For instance, given "www.google.com" it returns "www".
 func shortHostname(hostname string) string {