Draft: Update Ironbank to v1.16.0

This MR contains the following updates:

Package	Update	Change
ironbank/big-bang/base	minor	1.2.0 -> 1.16.0
registry1.dso.mil/ironbank/big-bang/base	minor	1.2.0 -> 1.16.0

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This MR has been generated by Renovate Bot.

added Big Bang Add Ons Package Sustainment kindmaintenance renovate sonarqube labels

mentioned in issue #186 (closed)

closed