Update Ironbank Docker tags

This MR contains the following updates:

Package	Update	Change
ironbank/big-bang/argocd	minor	v2.0.1 -> v2.1.7
ironbank/opensource/dexidp/dex	minor	v2.28.1 -> v2.30.0
ironbank/opensource/redis/redis6	patch	6.2.4 -> 6.2.6

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