tools: bump cpplint.py to 3d8f6f876d

PR-URL: #25771
Fixes: #25760
Refs: https://github.com/cpplint/cpplint/blob/3d8f6f876dd6e3918e5641483298dbc82e65f358/cpplint.py
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

Author: refack