updat ein PlatformIO and marlin code couses error during compilation

[kdobrev]

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This is the part that needs to be pulled https://github.com/MarlinFirmware/Marlin/commit/c2decc3e2e30c7cb0f517b7e40d8138a8c1d4a81

And this is the thread https://community.platformio.org/t/trying-to-compile-marlin-2-1-2-for-ender-3-skr-mini-v2-0-board/33769/10 where I read how to solve my issue.

I ended up copy pasteing the whole code for Marlin.py form the official repo to my folder.