Updated tools to newer version (same versions as Arduino-samd).

[josefwegner]

These versions also do have an ARM64 versions.

For this change to work properly (without having cores installed that also use these tools - e.g. Arduino-samd) we also need to update the core package_index.json.

Signed-off-by: Josef Wegner [email protected]

[CLAassistant]

All committers have signed the CLA.

[vChavezB]

Hi, I think it would be great that the toolchain is updated. As a solution I am experimenting in creating enhancements to this repo as it doesnt seem active.

Boards package json https://github.com/vChavezB/ArduinoBoards/tree/master/SAM3X

Arduino Core Sam enhanced https://github.com/vChavezB/ArduinoCore-sam

As a first step I updated the toolchain to the latest version 10.3.2021.