feat(helm): update chart longhorn to 1.5.1

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
longhorn (source)	minor	1.4.2 -> 1.5.1

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Release Notes

longhorn/charts (longhorn)

### [`v1.5.1`](https://togithub.com/longhorn/charts/releases/tag/longhorn-1.5.1) [Compare Source](https://togithub.com/longhorn/charts/compare/longhorn-1.5.0...longhorn-1.5.1) Longhorn is a distributed block storage system for Kubernetes. ### [`v1.5.0`](https://togithub.com/longhorn/charts/releases/tag/longhorn-1.5.0) [Compare Source](https://togithub.com/longhorn/charts/compare/longhorn-1.4.3...longhorn-1.5.0) Longhorn is a distributed block storage system for Kubernetes. ### [`v1.4.3`](https://togithub.com/longhorn/charts/releases/tag/longhorn-1.4.3) [Compare Source](https://togithub.com/longhorn/charts/compare/longhorn-1.4.2...longhorn-1.4.3) Longhorn is a distributed block storage system for Kubernetes.

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