Backfill published_by_id of catalog_resource_versions

What does this MR do and why?

published_by is the user who publishes the CI Catalog Resource Version. It must be equal to the release author because creating a release and publishing a version must be done in a single session via release-cli.

Here, we are backfilling the old data from the releases table by copying releases.author to catalog_resource_versions.published_by_id

Related to #442783 (closed)

Implementation table

Step	Status
Extract CI catalog component builder into a ser... (!159703 - merged)	✅
Add published_by to CI Catalog Resource Version (!162843 - merged)	✅
Backfill published_by_id of catalog_resource_ve... (!163301 - merged)	⏳
API Endpoint for CI Catalog Publish	TODO

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