Update cos to cos-stable-59-9460-64-0

[abgworrall]

This version of cos contains a fix for ipaliasing.

NONE

[k8s-ci-robot]

Hi @abgworrall. Thanks for your PR.

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[abgworrall]

/assign @bowei @krzyzacy

[krzyzacy]

@k8s-bot ok to test

[abgworrall]

/assign @gmarek - for cluster/kubemark/OWNERS

[krzyzacy]

/lgtm

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: abgworrall, krzyzacy
We suggest the following additional approver: gmarek

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[abgworrall]

This PR has been merged into pr #47530 , and so I'm closing this one.