Update csi-lib-utils to v0.18.1

[solumath]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Update csi-lib-utils to v0.18.1 to fix kubernetes-csi/csi-lib-utils#177

Which issue(s) this PR fixes:
Fixes kubernetes-csi/csi-lib-utils#177

Update csi-lib-utils to v0.18.1

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[k8s-ci-robot]

Hi @solumath. Thanks for your PR.

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[jsafrane]

/ok-to-test

[jsafrane]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jsafrane, solumath

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