Update Helm release app-template to v4.3.0 (#1465)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [app-template](https://github.com/bjw-s-labs/helm-charts) | minor | `4.2.0` -> `4.3.0` |

---

### Release Notes

<details>
<summary>bjw-s-labs/helm-charts (app-template)</summary>

### [`v4.3.0`](https://github.com/bjw-s-labs/helm-charts/releases/tag/app-template-4.3.0)

[Compare Source](https://github.com/bjw-s-labs/helm-charts/compare/app-template-4.2.0...app-template-4.3.0)

##### Changelog:

##### Changed

- Upgraded the common library to v4.3.0
  - [Upgrade notes](https://bjw-s-labs.github.io/helm-charts/docs/app-template/upgrade-instructions/)
  - [Detailed release notes](https://github.com/bjw-s-labs/helm-charts/releases/tag/common-4.3.0)

</details>

---

### Configuration

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---

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---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #1465
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/services/blocky/Chart.yaml

@@ -16,6 +16,6 @@ dependencies:
   - name: app-template
     alias: blocky
     repository: https://bjw-s-labs.github.io/helm-charts/
-    version: 4.2.0
+    version: 4.3.0
 icon: https://cdn.jsdelivr.net/gh/selfhst/icons/png/blocky.png
 appVersion: v0.25

clusters/cl01tl/services/kubernetes-cloudflare-ddns/Chart.yaml

@@ -18,6 +18,6 @@ dependencies:
   - name: app-template
     alias: kubernetes-cloudflare-ddns
     repository: https://bjw-s-labs.github.io/helm-charts/
-    version: 4.2.0
+    version: 4.3.0
 icon: https://cdn.jsdelivr.net/gh/selfhst/icons/png/cloudflare.png
 appVersion: v2.0.0

clusters/cl01tl/services/talos/Chart.yaml

@@ -17,10 +17,10 @@ dependencies:
   - name: app-template
     alias: etcd-backup
     repository: https://bjw-s-labs.github.io/helm-charts/
-    version: 4.2.0
+    version: 4.3.0
   - name: app-template
     alias: etcd-defrag
     repository: https://bjw-s-labs.github.io/helm-charts/
-    version: 4.2.0
+    version: 4.3.0
 icon: https://avatars.githubusercontent.com/u/13804887?s=200&v=4
 appVersion: v0.1.0-beta.3