Update dependencies

vendor/tailscale.com/atomicfile/atomicfile.go

@@ -15,8 +15,9 @@ import (
 )
 
 // WriteFile writes data to filename+some suffix, then renames it into filename.
-// The perm argument is ignored on Windows. If the target filename already
-// exists but is not a regular file, WriteFile returns an error.
+// The perm argument is ignored on Windows, but if the target filename already
+// exists then the target file's attributes and ACLs are preserved. If the target
+// filename already exists but is not a regular file, WriteFile returns an error.
 func WriteFile(filename string, data []byte, perm os.FileMode) (err error) {
 	fi, err := os.Stat(filename)
 	if err == nil && !fi.Mode().IsRegular() {
@@ -47,5 +48,5 @@ func WriteFile(filename string, data []byte, perm os.FileMode) (err error) {
 	if err := f.Close(); err != nil {
 		return err
 	}
-	return os.Rename(tmpName, filename)
+	return rename(tmpName, filename)
 }

vendor/tailscale.com/atomicfile/atomicfile_notwindows.go

@@ -0,0 +1,14 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !windows
+
+package atomicfile
+
+import (
+	"os"
+)
+
+func rename(srcFile, destFile string) error {
+	return os.Rename(srcFile, destFile)
+}

vendor/tailscale.com/atomicfile/atomicfile_windows.go

@@ -0,0 +1,33 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package atomicfile
+
+import (
+	"os"
+
+	"golang.org/x/sys/windows"
+)
+
+func rename(srcFile, destFile string) error {
+	// Use replaceFile when possible to preserve the original file's attributes and ACLs.
+	if err := replaceFile(destFile, srcFile); err == nil || err != windows.ERROR_FILE_NOT_FOUND {
+		return err
+	}
+	// destFile doesn't exist. Just do a normal rename.
+	return os.Rename(srcFile, destFile)
+}
+
+func replaceFile(destFile, srcFile string) error {
+	destFile16, err := windows.UTF16PtrFromString(destFile)
+	if err != nil {
+		return err
+	}
+
+	srcFile16, err := windows.UTF16PtrFromString(srcFile)
+	if err != nil {
+		return err
+	}
+
+	return replaceFileW(destFile16, srcFile16, nil, 0, nil, nil)
+}

vendor/tailscale.com/atomicfile/mksyscall.go

@@ -0,0 +1,8 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package atomicfile
+
+//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go
+
+//sys replaceFileW(replaced *uint16, replacement *uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) [int32(failretval)==0] = kernel32.ReplaceFileW

vendor/tailscale.com/atomicfile/zsyscall_windows.go

@@ -0,0 +1,52 @@
+// Code generated by 'go generate'; DO NOT EDIT.
+
+package atomicfile
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
+	errERROR_EINVAL     error = syscall.EINVAL
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e syscall.Errno) error {
+	switch e {
+	case 0:
+		return errERROR_EINVAL
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
+
+	procReplaceFileW = modkernel32.NewProc("ReplaceFileW")
+)
+
+func replaceFileW(replaced *uint16, replacement *uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) {
+	r1, _, e1 := syscall.Syscall6(procReplaceFileW.Addr(), 6, uintptr(unsafe.Pointer(replaced)), uintptr(unsafe.Pointer(replacement)), uintptr(unsafe.Pointer(backup)), uintptr(flags), uintptr(exclude), uintptr(reserved))
+	if int32(r1) == 0 {
+		err = errnoErr(e1)
+	}
+	return
+}