docs: add disruption budgets upgrade guide (#5345)

website/content/en/preview/upgrading/upgrade-guide.md

@@ -33,6 +33,9 @@ kubectl apply -f https://raw.githubusercontent.com/aws/karpenter{{< githubRelRef
 kubectl apply -f https://raw.githubusercontent.com/aws/karpenter{{< githubRelRef >}}pkg/apis/crds/karpenter.k8s.aws_ec2nodeclasses.yaml
 ```
 
+### Upgrading to v0.34.0+
+* Karpenter now supports `nodepool.spec.disruption.budgets`. Since this requires an update to the Custom Resource, before upgrading, you should re-apply the new updates to the CRDs. Check out [Disruption Budgets]({{<ref "../concepts/disruption#disruption-budgets" >}}) for more.
+
 ### Upgrading to v0.33.0+
 
 * Karpenter now tags `spot-instances-request` with the same tags that it tags instances, volumes, and primary ENIs. This means that you will now need to add `ec2:CreateTags` permission for `spot-instances-request`. You can also further scope your controller policy for the `ec2:RunInstances` action to require that it launches the `spot-instances-request` with these specific tags. You can view an example of scoping these actions in the [Getting Started Guide's default CloudFormation controller policy](https://github.com/aws/karpenter/blob/v0.33.0/website/content/en/preview/getting-started/getting-started-with-karpenter/cloudformation.yaml#L61).