Update orangeopensource/nifikop Docker tag to v0.6.0

This MR contains the following updates:

Package	Type	Update	Change
orangeopensource/nifikop	ironbank-docker	minor	v0.5.3-release -> v0.6.0-release
orangeopensource/nifikop	stage	minor	v0.5.3-release -> v0.6.0-release

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