v5.5.0-9

What's Changed

• Showing latest versions and link to release notes
• fix featureset typo for apps namespace
• bump download wait time
• improv: refactor kubeconfig to env
• Fix private registry namespace
• Feat self serve upgrade
• add upgrade paths for 5.5.0
• wait for istio to be uninstalled
• adding timeout to validation
• fix istio removal logic
• Fix ciw image prep
• fix current version
• fix kubeconfig after upgrade k8s
• skip istio where applicable
• fix absolute path for ssh key
• prevent ssh from waiting for prompt
• support proxy
• fix nginx type for MN