Release 0.52.0

Improvements

• create addons (except vpc-cni) after nodegroups are created (#3736)
• update IAM policy for aws-load-balancer-controller #3734

Bug Fixes

• Fix taints support in unmanaged nodegroups (#3702)
• Fix bug preventing nodegroups from joining fully-private clusters (#3737)
• Reset cgroup drivers back to cgroupfs (#3637)

Acknowledgments

Weaveworks would like to sincerely thank:
@M00nF1sh