chore: Fix CHANGELOG.md version bump for v3.12.0
What does this MR do?
Fix incorrect version in CHANGELOG for latest changes !30 (merged)
What are the relevant issue numbers?
Does this MR meet the acceptance criteria?
- [-] Changelog entry added
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Documentation created/updated for GitLab EE, if necessary -
Documentation created/updated for this project, if necessary -
Documentation reviewed by technical writer or follow-up review issue created -
Tests added for this feature/bug -
Job definition updated, if necessary -
Ensure the report version matches the equivalent schema version -
Conforms to the code review guidelines -
Conforms to the Go guidelines -
Security reports checked/validated by reviewer