Update Ironbank

This MR contains the following updates:

Package	Update	Change
gluon	patch	0.4.6 -> 0.4.7
registry1.dso.mil/ironbank/elastic/elasticsearch/elasticsearch	minor	8.11.3 -> 8.12.0
registry1.dso.mil/ironbank/elastic/kibana/kibana	minor	8.11.3 -> 8.12.0

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This MR has been generated by Renovate Bot.

Source: https://www.elastic.co/guide/en/kibana/current/release-notes-8.12.0.html

Upgrade Notices

Breaking Changes from 8.12.0 release notes (kibana)

• New SLO architecture
• A new sub-feature privilege to control user access to the cases settings