Calling script instead of using hardcoded value

[Dylan-G-Roberts]

Second PR fo https://github.com/kubernetes/sig-security/issues/60

This calls the script that was moved to sig-security-tooling/scanning/build-deps-and-release-images.sh

First PR link https://github.com/kubernetes/sig-security/pull/128

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @Dylan-G-Roberts. Thanks for your PR.

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[krzyzacy]

/ok-to-test /hold until the sig-security PR merges