Draft: chore(deps): update ironbank

This MR contains the following updates:

Package	Update	Change
gluon	patch	0.9.2 -> 0.9.6
ironbank/opensource/keycloak/keycloak (source)	patch	26.4.1 -> 26.4.2
postgresql (source)	major	16.7.19 -> 18.1.4
registry1.dso.mil/ironbank/opensource/keycloak/keycloak (source)	patch	26.4.1 -> 26.4.2

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

(closes)[#253]

Reviewer only

• Tested and Validated changes

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Release Notes

bitnami/charts (postgresql)

v16.7.27

• [bitnami/postgresql] ⚡ ⬆️ Update dependency references (#​36195) (36f8598), closes #​36195

v16.7.26

• [bitnami/postgresql] ⚡ ⬆️ Update dependency references (#​35921) (e564f07), closes #​35921

v16.7.24

• [bitnami/postgresql] Remove hardcoded references to image repository (#​35694) (bc094f7), closes #​35694

v16.7.21

• [bitnami/postgresql] ⚡ ⬆️ Update dependency references (#​35235) (e3f9cac), closes #​35235

v16.7.20

• [bitnami/*] Adapt main README and change ascii (#​35173) (73d15e0), closes #​35173
• [bitnami/*] Adapt welcome message to BSI (#​35170) (e1c8146), closes #​35170
• [bitnami/*] Add BSI to charts' READMEs (#​35174) (4973fd0), closes #​35174
• [bitnami/postgresql] Rename backup.cronjob.timeZone to backup.cronjob.timezone (#​35153) (8a2dca9), closes #​35153

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Upgrade Notices

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