build(deps): Bump github.com/beego/beego/v2 from 2.0.7 to 2.2.1 in /examples/knative/go/kn-go-harbor-webhook

build(deps): Bump github.com/beego/beego/v2 from 2.0.7 to 2.2.1 in /examples/knative/go/kn-go-harbor-webhook #1908