v0.23.0-rc.6

What's Changed

• [v0.23] fix: probe timeout & apiserver flags (#2519) by @loft-bot in #2521
• [v0.23] fix: service label sync (#2522) by @loft-bot in #2525
• [v0.23] Reuse Namespace should be in experimental section by @loft-bot in #2526
• [v0.23] fix(ci): slack notification (#2505) by @loft-bot in #2513
• [v0.23] change approach for checking existing vclusters in an ns by @loft-bot in #2531
• [v0.23] refactor: cache authorizer & short local k8s timeout (#2528) by @FabianKramm in #2533

Full Changelog: v0.23.0-rc.5...v0.23.0-rc.6