Update Ironbank

This MR contains the following updates:

Package	Update	Change
gluon	patch	0.5.3 -> 0.5.4
ironbank/big-bang/grafana/grafana-plugins (source)	minor	11.1.4 -> 11.2.0
ironbank/kiwigrid/k8s-sidecar (source)	patch	1.27.5 -> 1.27.6
registry1.dso.mil/ironbank/big-bang/grafana/grafana-plugins (source)	minor	11.1.4 -> 11.2.0
registry1.dso.mil/ironbank/kiwigrid/k8s-sidecar (source)	patch	1.27.5 -> 1.27.6

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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Upgrade Notices

N/A