Apache Flink

Hi Team,
We are using Flink-Operator version <https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-release-1.5/docs/custom-resource/overview/|1.5.0>,
```jobmanager:
  resource:
    ephemeralStorage: "2Gi"

taskmanager:
  resource:
    ephemeralStorage: "2Gi"```
This is giving error as :
```Error: unable to build kubernetes objects from release manifest: error validating "": error validating data: [ValidationError(FlinkDeployment.spec.jobManager.resource): unknown field "ephemeralStorage" in org.apache.flink.v1beta1.FlinkDeployment.spec.jobManager.resource, ValidationError(FlinkDeployment.spec.taskManager.resource): unknown field "ephemeralStorage" in org.apache.flink.v1beta1.FlinkDeployment.spec.taskManager.resource]```
Is anyone seeing this ?
This had worked previously, any breaking changes done to the operator ?

Appreciate any help.
Thanks