Feature Request - Update old API versions automatically

[vikas027]

Describe the bug

Feature Request

I have just used flux cli to upgrade from v2.2.3 to v2.3.0. I have noticed that the new API versions (in the CRDs) are not updated along with the flux components.

It will be good if we can update the same, maybe make it optional with a flag to start with?

Steps to reproduce

1. Install the old version of flux
2. Update to a new version as shown in the documentation.

Expected behavior

N/A

Screenshots and recordings

OS / Distro

MacOS 13.1

Flux version

v2.3.0

Flux check

❯ flux check
► checking prerequisites
✔ Kubernetes 1.28.5 >=1.28.0-0
► checking version in cluster
✔ distribution: flux-v2.2.3
✔ bootstrapped: true
► checking controllers
✔ helm-controller: deployment ready
► ghcr.io/fluxcd/helm-controller:v0.37.4
✔ image-automation-controller: deployment ready
► ghcr.io/fluxcd/image-automation-controller:v0.37.1
✔ image-reflector-controller: deployment ready
► ghcr.io/fluxcd/image-reflector-controller:v0.31.2
✔ kustomize-controller: deployment ready
► ghcr.io/fluxcd/kustomize-controller:v1.2.2
✔ notification-controller: deployment ready
► ghcr.io/fluxcd/notification-controller:v1.2.4
✔ source-controller: deployment ready
► ghcr.io/fluxcd/source-controller:v1.2.4
► checking crds
✔ alerts.notification.toolkit.fluxcd.io/v1beta3
✔ buckets.source.toolkit.fluxcd.io/v1beta2
✔ gitrepositories.source.toolkit.fluxcd.io/v1
✔ helmcharts.source.toolkit.fluxcd.io/v1beta2
✔ helmreleases.helm.toolkit.fluxcd.io/v2beta2
✔ helmrepositories.source.toolkit.fluxcd.io/v1beta2
✔ imagepolicies.image.toolkit.fluxcd.io/v1beta2
✔ imagerepositories.image.toolkit.fluxcd.io/v1beta2
✔ imageupdateautomations.image.toolkit.fluxcd.io/v1beta1
✔ kustomizations.kustomize.toolkit.fluxcd.io/v1
✔ ocirepositories.source.toolkit.fluxcd.io/v1beta2
✔ providers.notification.toolkit.fluxcd.io/v1beta3
✔ receivers.notification.toolkit.fluxcd.io/v1
✔ all checks passed

Git provider

GitHub

Container Registry provider

DockerHub

Additional context

To use the new API versions in the CRDs, I have just updated it manually.

For example, I have updated source.toolkit.fluxcd.io/v1beta2 to source.toolkit.fluxcd.io/v1

Code of Conduct

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