Update registry1.dso.mil/ironbank/opensource/debian/debian Docker tag to v12

This MR contains the following updates:

Package	Type	Update	Change
registry1.dso.mil/ironbank/opensource/debian/debian	ironbank-base	major	11.9 -> 12.5
registry1.dso.mil/ironbank/opensource/debian/debian	final	major	11.9 -> 12.5

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