Update Ironbank to v2.5.5

This MR contains the following updates:

Package	Update	Change
ironbank/big-bang/argocd	patch	v2.5.3 -> v2.5.5
registry1.dso.mil/ironbank/big-bang/argocd	patch	v2.5.3 -> v2.5.5

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relates to #65 (closed)