Why during upgrades do I get several SKIPPING messages?

During the upgrade I see the following:

Dumping PostgreSQL database gitlabhq_production … [DONE]
2021-10-17 07:18:28 -0400 – done
2021-10-17 07:18:28 -0400 – Dumping repositories …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping uploads …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping builds …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping artifacts …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping pages …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping lfs objects …
2021-10-17 07:18:28 -0400 – [SKIPPED]
2021-10-17 07:18:28 -0400 – Dumping container registry images …
2021-10-17 07:18:28 -0400 – [SKIPPED]

Why are all these items being skipped? There are repositories (projects?) and container registry images.