chore(deps): update helm release cnpg-cluster to v0.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
cnpg-cluster	minor	0.3.15 -> 0.4.0

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Release Notes

small-hack/cloudnative-pg-cluster-chart (cnpg-cluster)

### [`v0.4.0`](https://togithub.com/small-hack/cloudnative-pg-cluster-chart/releases/tag/cnpg-cluster-0.4.0) [Compare Source](https://togithub.com/small-hack/cloudnative-pg-cluster-chart/compare/cnpg-cluster-0.3.15...cnpg-cluster-0.4.0) Create postgres tenant clusters managed by the CNPG Operator ##### What's Changed - Update helm/kind-action action to v1.10.0 by [@​renovate](https://togithub.com/renovate) in [https://github.com/small-hack/cloudnative-pg-cluster-chart/pull/34](https://togithub.com/small-hack/cloudnative-pg-cluster-chart/pull/34) - make the bootstrap section empty by default by [@​jessebot](https://togithub.com/jessebot) in [https://github.com/small-hack/cloudnative-pg-cluster-chart/pull/36](https://togithub.com/small-hack/cloudnative-pg-cluster-chart/pull/36) **Full Changelog**: https://github.com/small-hack/cloudnative-pg-cluster-chart/compare/cnpg-cluster-0.3.15...cnpg-cluster-0.4.0

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