bump distroless-iptables to use go1.22.6

[cpanato]

What type of PR is this?

/kind cleanup
/kind feature

What this PR does / why we need it:

• bump distroless-iptables to use go1.22.6

/assign @xmudrii @saschagrunert @Verolop
cc @kubernetes/release-managers

Which issue(s) this PR fixes:

xref: #3723

Special notes for your reviewer:

Does this PR introduce a user-facing change?

- bump distroless-iptables to use go1.22.6

[xmudrii]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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