Update Ironbank

This MR contains the following updates:

Package	Update	Change
ironbank/opensource/openpolicyagent/gatekeeper	patch	v3.13.0 -> v3.13.2
registry1.dso.mil/ironbank/opensource/kubernetes/kubectl	minor	1.27.6 -> v1.28.2
registry1.dso.mil/ironbank/opensource/openpolicyagent/gatekeeper	patch	v3.13.0 -> v3.13.2

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