Merge pull request #98 from kcp-ci-bot/cherry-pick-97-to-release-0.2

[release-0.2] Update default kcp tag to v0.28.3

Author: kcp-ci-bot

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"