Release 0.56.0

Features

• Configure parallel upgrades with UpdateConfig and MaxUnavailable (or MaxUnavailablePercentage) (#3753)
• Bootstrap update nodegroup command (#3828)
• Update the maxUnavailable number of nodes during parallel upgrades (#3855)
• Update command can update multiple nodegroups (#3914)

Improvements

• Add default tags to OIDC provider resources (#3885)
• Do not set cgroupdriver to systemd in legacy bootstrap path (#3908)

Bug Fixes

• Avoid cn-north-1d (#3920)
• Ensure GPU AMI is used when using multiple instances (#3924)
• Do not fail on valid flag combinations for managed ngs (#3930)