internal/debug: support color terminal for cygwin/msys2 (#17740)

- update go-colorable, go-isatty, go-runewidth packages
- use go-isatty instead of log/term and remove log/term package

vendor/github.com/mattn/go-isatty/isatty_linux.go

@@ -1,5 +1,5 @@
 // +build linux
-// +build !appengine
+// +build !appengine,!ppc64,!ppc64le
 
 package isatty
 
@@ -16,3 +16,9 @@ func IsTerminal(fd uintptr) bool {
 	_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
 	return err == 0
 }
+
+// IsCygwinTerminal return true if the file descriptor is a cygwin or msys2
+// terminal. This is also always false on this environment.
+func IsCygwinTerminal(fd uintptr) bool {
+	return false
+}