Issues with newer versions of arm GCC

[carlosperate]

We have to stick to v10.2.1 (10-2020-q4) as any newer version causes compilation issues in CODAL:

• https://github.com/lancaster-university/microbit-v2-samples/issues/33#issuecomment-951708083

[carlosperate]

The issue with GCC v10.3 was fixed in:

• https://github.com/lancaster-university/codal-core/pull/144

But there is an issue with v11.2, which looks like a compiler bug:

• https://github.com/lancaster-university/microbit-v2-samples/issues/47
• https://community.arm.com/support-forums/f/compilers-and-libraries-forum/52623/gcc-11-2-arm-none-eabi-internal-compiler-error-illegal-instruction
• https://bugs.linaro.org/show_bug.cgi?id=5825

This issue is resolved in v11.3, but that release is much bigger:

• https://github.com/carlosperate/docker-microbit-toolchain/issues/4

[carlosperate]

There are issues building micro:bit V1 repos and DAPLink with gcc 12, so cannot move yet:

• https://github.com/bbcmicrobit/micropython/issues/795
• https://github.com/lancaster-university/microbit-dal/issues/493
• https://github.com/ARMmbed/DAPLink/issues/1040