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Skip updates for existing components and versions

Brian Williams requested to merge bwill/reduce-updates-for-sbom-components-and-versions into master

What does this MR do and why?

Skip updates for existing components and versions

Currently, these records are created by upserts, which causes many needless updates that contribute to WAL volume on the database. This change fires a separate query to determine if records already exist instead. I estimate that this should result in a WAL volume reduction of several Mb/s on GitLab.com.

Fixes: https://gitlab.com/gitlab-org/gitlab/-/issues/474480

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Edited by Brian Williams

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