Check expected publication push URL

cmd/releasekit/main.go

@@ -42,6 +42,7 @@ func run(ctx context.Context, args []string, stdout, stderr io.Writer) int {
 		}
 		request := candidateRequest(invocation, settings, stderr)
 		if invocation.Command == cli.PublishAction {
+			request.ExpectedPushURL = settings.ExpectedPushURL
 			fmt.Fprintf(stderr, "validating and publishing %s\n", invocation.Version)
 			result, err := releasekit.Publish(ctx, request)
 			if err != nil {