Update registry1.dso.mil/ironbank/opensource/kiali/kiali Docker tag to v1.84.0

This MR contains the following updates:

Package	Update	Change
registry1.dso.mil/ironbank/opensource/kiali/kiali (source)	minor	v1.83.0 -> v1.84.0

Bigbang test pipeline with IB staging image: https://repo1.dso.mil/big-bang/bigbang/-/pipelines/3259014

Bigbang test pipeline with IB prod images: https://repo1.dso.mil/big-bang/bigbang/-/pipelines/3259170

Upstream release notes: https://kiali.io/news/release-notes/#1840

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