6.4.0

What's Changed

• update flextesa in mkchain by @nicolasochem in #398
• make readiness probe optional by @nicolasochem in #397
• update default octez to v12 by @nicolasochem in #399
• fix issue with the readiness probe toggle and older helm by @nicolasochem in #401
• Fix Helm error when a node class is set to null by @harryttd in #400
• switch to ithaca as default protocol for priv chains by @nicolasochem in #403

Full Changelog: 6.3.0...6.4.0