Prepare for vulnerability_occurrences.uuid column type change to UUID

Michał Zającrequested to merge
335708-prepare-for-vulnerability_occurrences-uuid-type-change into master

What does this MR do and why?

This MR does two things:

  1. Makes our migration helpers a little bit more flexible when it comes to creating triggers when changing column types
  2. Prepares for vulnerability_occurrences.uuid column type change using above helpers

Related issue

Related to #335708 (closed)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

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