Update quay.io/kiali/kiali-operator Docker tag to v1.76.0

This MR contains the following updates:

Package	Type	Update	Change
quay.io/kiali/kiali-operator	ironbank-docker	minor	v1.74.0 -> v1.76.0
quay.io/kiali/kiali-operator	stage	minor	v1.74.0 -> v1.76.0

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