Update Ironbank

This MR contains the following updates:

Package	Update	Change
redis (source)	major	27.0.14 → 28.0.2
registry1.dso.mil/ironbank/bitnami/analytics/redis-exporter (source)	minor	v1.86.0 → v1.89.0
registry1.dso.mil/ironbank/opensource/redis/redis8-slim (source)	minor	8.8.0 → 8.10.0

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

authservice connecting to redis

redis replica communication

redis dashboard for prometheus

verified authservice wrote some keys to redis

Reviewer only

• Tested and Validated changes

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This MR was automatically generated by Renovate Bot.

Linked Issues

Closes #169 (closed)

Upgrade Notices

N/A