Update registry1.dso.mil/ironbank/opensource/grafana/grafana Docker tag to v11.1.2

This MR contains the following updates:

Package	Type	Update	Change
registry1.dso.mil/ironbank/opensource/grafana/grafana		patch	11.1.1 -> 11.1.2
registry1.dso.mil/ironbank/opensource/grafana/grafana	ironbank-base	patch	11.1.1 -> 11.1.2
registry1.dso.mil/ironbank/opensource/grafana/grafana	final	patch	11.1.1 -> 11.1.2

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