SKIP UPGRADE CHECK Update Ironbank

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/opensource/mattermost/mattermost (source)	minor	9.10.1 -> 9.11.1
registry1.dso.mil/ironbank/opensource/postgres/postgresql (source)	major	15.7 -> 16.2
registry1.dso.mil/ironbank/opensource/postgres/postgresql12 (source)	minor	12.19 -> 12.20

Complete MR checklist

Assignee

• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

Add supporting info below

Reviewer only

• Tested and Validated changes

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Configuration

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♻ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

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This MR was automatically generated by Renovate Bot.

Upgrade Notices

When using the builtin bitnami postgresql server module (which is not a supported configuration outside of development environments), upgrading causes fatal error (postgres v15 -> v16).

Database files are incompatible with server.

The data directory was initialized by PostgreSQL version 15, which is not compatible with this version 16.2.

When deploying this upgrade to installations using the builtin bitnami postgresql server, you must delete your postgresql pods and storage and recreate them manually.