DO-NOT-MERGE: Proof PR for library-go#1964

[liouk]

This is a proof PR for openshift/library-go#1964. It only updates the ciphers used (like the original PR does) and not bumping lib-go, because there is a kube version mismatch between this repo and lib-go and it's beyond the scope of the proof PR to do a full kube bump.

/hold

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: liouk
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[liouk]

/retest

[openshift-ci]

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

Test name	Commit	Details	Required	Rerun command
ci/prow/verify-deps	09b1d06	link	true	/test verify-deps

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