Update Ironbank to v6.0.3

This MR contains the following updates:

Package	Update	Change
ironbank/opensource/minio/operator (source)	patch	v6.0.2 -> v6.0.3
registry1.dso.mil/ironbank/opensource/minio/operator (source)	patch	v6.0.2 -> v6.0.3

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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Upgrade Notices

N/A