Update PlatformIO Configuration.py to use UTF-8#24719

thinkyhead merged 3 commits intoMarlinFirmware:bugfix-2.1.xMarlinFirmware/Marlin:bugfix-2.1.xfrom

ButchMonkey:ButchMonkey-UTF8-Config-fixButchMonkey/Marlin:ButchMonkey-UTF8-Config-fixCopy head branch name to clipboard