debian-base: switch to debian bookworm

[saschagrunert]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Switching all images to debian 12 bookworm.

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

/hold

For discussion about everything.

Does this PR introduce a user-facing change?

Using debian 12 (bookworm) for all images.

[k8s-ci-robot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[saschagrunert]

Notification mail is out https://groups.google.com/g/kubernetes-sig-release/c/M-7rt-jvE-8/m/zK0lLxu6AgAJ

Setting lazy consens to July 1st before moving on with this topic.

[cpanato]

/approve
/lgtm

[saschagrunert]

/unhold

[k8s-ci-robot]

@saschagrunert: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-release-image-debian-iptables	7e4e3e8	link	true	/test pull-release-image-debian-iptables
pull-release-image-setcap	7e4e3e8	link	true	/test pull-release-image-setcap
pull-release-image-releng-ci	4ca9531	link	true	/test pull-release-image-releng-ci

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.

[saschagrunert]

/retest

[saschagrunert]

@kubernetes/release-managers PTAL

[cpanato]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cpanato, saschagrunert

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