🐛 bump golang to 1.23.6

[tuminoid]

This is to get rid of https://osv.dev/GO-2025-3447, where code path is called, but the vulnerability is only on ppc64, so it is not exploitable.

[tuminoid]

/cherry-pick release-1.9
/cherry-pick release-1.8

[metal3-io-bot]

@tuminoid: once the present PR merges, I will cherry-pick it on top of release-1.8, release-1.9 in new PRs and assign them to you.

In response to this:

/cherry-pick release-1.9
/cherry-pick release-1.8

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-sigs/prow repository.

[tuminoid]

/test metal3-centos-e2e-integration-test-main metal3-ubuntu-e2e-integration-test-main

[tuminoid]

/cc @kashifest @lentzi90

[lentzi90]

/approve

[metal3-io-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lentzi90

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[kashifest]

/lgtm

[metal3-io-bot]

@tuminoid: #2320 failed to apply on top of branch "release-1.8":

Applying: bump golang to 1.23.6
Using index info to reconstruct a base tree...
M	Makefile
A	hack/fake-apiserver/Dockerfile
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): hack/fake-apiserver/Dockerfile deleted in HEAD and modified in bump golang to 1.23.6. Version bump golang to 1.23.6 of hack/fake-apiserver/Dockerfile left in tree.
Auto-merging Makefile
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 bump golang to 1.23.6

In response to this:

/cherry-pick release-1.9
/cherry-pick release-1.8

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-sigs/prow repository.

[metal3-io-bot]

@tuminoid: new pull request created: #2322

In response to this:

/cherry-pick release-1.9
/cherry-pick release-1.8

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-sigs/prow repository.