CAN baudrate 250k missing

[marckhn]

Describe the bug

src/M5StamPLC.cpp misses the 250k setting for CAN bus speed selection

To reproduce

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Expected behavior

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Screenshots

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Environment

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• IDE &IDE Version:
• Repository Version:

Additional context

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Issue checklist

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• My report contains all necessary details

[Forairaaaaa]

Hi, this should be fixed in 1.1.0, pls check it out~