Update docker base image to alpine3.21

[cdce8p]

https://github.com/home-assistant/docker-base/releases/tag/2024.12.0
https://github.com/home-assistant/docker-base/releases/tag/2024.12.1

[frenck]

This needs adjustment too:

wheels/builder/wheel.py

Lines 34 to 40 in 1103f7c

	_ALPINE_PLATFORM = {
	("3", "16"): "musllinux_1_2",
	("3", "17"): "musllinux_1_2",
	("3", "18"): "musllinux_1_2",
	("3", "19"): "musllinux_1_2",
	("3", "20"): "musllinux_1_2",
	}

[home-assistant]

Please take a look at the requested changes, and use the Ready for review button when you are done, thanks 👍

Learn more about our pull request process.

[frenck]

Thanks, @cdce8p 👍

../Frenck