[gardener-extension-os-ubuntu]

✨ New Features

[OPERATOR] The extension controller has been adjusted to the high availability configuration supported by Gardener as of release v1.60. See this document for more information about HA in gardener. (gardener/gardener-extension-os-ubuntu#72, @timuthy)

[OPERATOR] Adds a heartbeat controller that creates and renews a Lease resource named gardener-extension-heartbeat in the namespace where the extension controller is deployed. This Lease resource can be used by other controllers to check if the os-ubuntu extension controller is running. (gardener/gardener-extension-os-ubuntu#73, @AleksandarSavchev)
[DEPENDENCY] Dependency github.com/gardener/gardener is updated v1.56.0 -> v1.60.0. (gardener/gardener-extension-os-ubuntu#73, @AleksandarSavchev)