fix(helm): update chart cloudnative-pg ( 0.21.2 → 0.21.3 ) (#3755)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [cloudnative-pg](https://cloudnative-pg.io)
([source](https://togithub.com/cloudnative-pg/charts)) | patch |
`0.21.2` -> `0.21.3` |

---

### Release Notes

<details>
<summary>cloudnative-pg/charts (cloudnative-pg)</summary>

###
[`v0.21.3`](https://togithub.com/cloudnative-pg/charts/releases/tag/cloudnative-pg-v0.21.3)

[Compare
Source](https://togithub.com/cloudnative-pg/charts/compare/cloudnative-pg-v0.21.2...cloudnative-pg-v0.21.3)

CloudNativePG Operator Helm Chart

#### What's Changed

- Add 'additionalEnvVars' to the chart by
[@&#8203;Stevenpc3](https://togithub.com/Stevenpc3) in
[https://github.com/cloudnative-pg/charts/pull/303](https://togithub.com/cloudnative-pg/charts/pull/303)

#### New Contributors

- [@&#8203;Stevenpc3](https://togithub.com/Stevenpc3) made their first
contribution in
[https://github.com/cloudnative-pg/charts/pull/303](https://togithub.com/cloudnative-pg/charts/pull/303)

**Full Changelog**:
cloudnative-pg/charts@cloudnative-pg-v0.21.2...cloudnative-pg-v0.21.3

</details>

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Co-authored-by: repo-jeeves[bot] <106431701+repo-jeeves[bot]@users.noreply.github.com>

kubernetes/staging/apps/dbms/cloudnative-pg/cloudnative-pg/helm-release.yaml

@@ -10,7 +10,7 @@ spec:
   chart:
     spec:
       chart: cloudnative-pg
-      version: 0.21.2
+      version: 0.21.3
       sourceRef:
         kind: HelmRepository
         name: cloudnative-pg-charts