Update goharbor/harbor-portal Docker tag to v2.2.2

This MR contains the following updates:

Package	Type	Update	Change
goharbor/harbor-portal	ironbank-docker	patch	v2.2.1 -> v2.2.2
goharbor/harbor-portal		patch	v2.2.1 -> v2.2.2
goharbor/harbor-portal	stage	patch	v2.2.1 -> v2.2.2

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