Update calico/apiserver Docker tag to v3.28.2

This MR contains the following updates:

Package	Type	Update	Change
calico/apiserver		patch	v3.28.1 -> v3.28.2
calico/apiserver	ironbank-docker	patch	v3.28.1 -> v3.28.2
calico/apiserver	stage	patch	v3.28.1 -> v3.28.2

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