fix(deps): update dependency @google-cloud/security-center to v8.9.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@google-cloud/security-center (source)	8.8.0 -> 8.9.0

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Release Notes

googleapis/google-cloud-node (@​google-cloud/security-center)

v8.9.0

Features

• [securitycenter] Add toxic_combination and group_memberships fields to finding (#​5495) (41a96b4)

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