Import quote() form shlex rather than pipes

pipes module is deprecated since 3.11, and quote() has been available in
shlex since 3.3.

devlib/collector/ftrace.py

@@ -21,7 +21,7 @@ import re
 import subprocess
 import sys
 import contextlib
-from pipes import quote
+from shlex import quote
 
 from devlib.collector import (CollectorBase, CollectorOutput,
                               CollectorOutputEntry)