Update default kcp tag to v0.28.3

On-behalf-of: SAP <[email protected]>
Signed-off-by: Marvin Beckers <[email protected]>

Author: embik

internal/resources/resources.go

@@ -26,7 +26,7 @@ import (
 
 const (
 	ImageRepository = "ghcr.io/kcp-dev/kcp"
-	ImageTag        = "v0.28.1"
+	ImageTag        = "v0.28.3"
 
 	appNameLabel      = "app.kubernetes.io/name"
 	appInstanceLabel  = "app.kubernetes.io/instance"