Configure HelmRelease to create/replace CRDs

[ValentinGerlach]

What would you like to be added:

The HelmRelease should be configured to use the CreateReplace CRDs policy.

https://fluxcd.io/flux/components/helm/helmreleases/#controlling-the-lifecycle-of-custom-resource-definitions

Why is this needed:

We want to keep CRDs up to date.