fix(controllers/tagging): fix log format string

[gyuho]

What type of PR is this?

/kind cleanup

What this PR does / why we need it:

Fix cloud controler manager logs:

I1101 15:10:22.564856 11 tagging_controller.go:216] Dequeuing latency %!s(float64=0.000102683)

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[k8s-ci-robot]

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[hakman]

/lgtm
/assign @cartermckinnon

[hakman]

/retest

[cartermckinnon]

/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cartermckinnon

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