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 <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>

Author: refack