Update goharbor/harbor-jobservice Docker tag to v2.4.2

This MR contains the following updates:

Package	Type	Update	Change
goharbor/harbor-jobservice	ironbank-docker	patch	v2.4.1 -> v2.4.2
goharbor/harbor-jobservice		patch	v2.4.1 -> v2.4.2
goharbor/harbor-jobservice	stage	patch	v2.4.1 -> v2.4.2

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