Update Ironbank Docker tags to v2.2.21

This MR contains the following updates:

Package	Update	Change
ironbank/opensource/haproxy/haproxy22	patch	2.2.2 -> v2.2.21
registry1.dso.mil/ironbank/opensource/haproxy/haproxy22	patch	v2.2.2 -> v2.2.21

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