Switching container images to debian 12 (bookworm)

[Sascha Grunert]

Hey folks,

Debian 12 got released 12 days ago, so I would like to bring up the
point of switching our base images to the new distribution.

The default Docker Hub golang:1.20/19 image tags already refer to the
new version, which may cause implicit issues in CI stability if we
don't pin them to a specific distribution like golang:1.20-bullseye.

I created a tracking issue for the k/release images [0] and started
working on porting debian-base [1].

I'd like to set a lazy consensus until July 1st to open-up room for
input and discussions before we move forward. I appreciate any
thoughts on that topic.

Have a wonderful day and all the best,
Sascha
(SIG Release)

[0]: https://github.com/kubernetes/release/issues/3128
[1]: https://github.com/kubernetes/release/pull/3127