feature: disruption budget for Deployments

### Feature Description

Certain components deployed as Deployments may suffer from sudden scale-downs, lowering the availability of (part of) the kcp installation.

### Proposed Solution

Consider adding PodDisruptionBudget in Deployment definitions.

### Alternative Solutions

_No response_

### Want to contribute?

- [ ] I would like to work on this issue.

### Additional Context

_No response_