Release 0.68.0

Features

• Add support for EC2 detailed monitoring in nodeGroup (#4231)

Improvements

• Gracefully delete vpc-cni during cluster deletion (#4244)
• Drain nodegroups during cluster deletion (#4205)
• Remove support for 1.16 (#3944)
• Fix typo in warning message for existing service accounts. (#4233)
• Update documentation for EKS Connector (#4232)

Acknowledgments

Weaveworks would like to sincerely thank:
@igorakkerman, and @mmasaki