Update ulab to 6.12-2D

[CrackXT]

Hello Adafruit team,

The internal ulab in CircuitPython is still based on version 6.5.3 from 2024. Version 6.12 from 2026 is now available.

Would it make sense to update ulab to the latest version in future CircuitPython releases (>=10.3.x)?

Thanks.

[dhalbert]

Definitely we should upgrade. Thanks for the reminder.

[v923z]

@dhalbert Here is a release with the bug fix you referred to: https://github.com/v923z/micropython-ulab/releases/tag/6.12.1.

[dhalbert]

@v923z Thanks! In #11131, I am getting some large overflows on some boards, so I'll need to turn off some (I guess new) features on those boards.