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_others.go

@@ -0,0 +1,19 @@
+//go:build !windows
+// +build !windows
+
+package klog
+
+import (
+	"os/user"
+)
+
+func getUserName() string {
+	userNameOnce.Do(func() {
+		current, err := user.Current()
+		if err == nil {
+			userName = current.Username
+		}
+	})
+
+	return userName
+}