chore(deps): update azure/setup-helm action to v5 (#58)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [azure/setup-helm](https://github.com/azure/setup-helm) | action | major | `v4` → `v5` |

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### Release Notes

<details>
<summary>azure/setup-helm (azure/setup-helm)</summary>

### [`v5`](https://github.com/azure/setup-helm/compare/v4...v5)

[Compare Source](https://github.com/azure/setup-helm/compare/v4...v5)

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

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Reviewed-on: #58
Reviewed-by: t.behrendt <t.behrendt@noreply.localhost>
Co-authored-by: Renovate Bot <renovate@t00n.de>
Co-committed-by: Renovate Bot <renovate@t00n.de>

.gitea/workflows/deploy.yaml

@@ -124,7 +124,7 @@ jobs:
         with:
           repo: ${{ github.repository }}
       - uses: azure/setup-kubectl@15650b3ad78fff148532a140b8a4c821796b2d7b # v5.0.0
-      - uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4
+      - uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5
         with:
           version: "3.15.0"
       - uses: azure/k8s-set-context@ae59a723ba9abe7a9655538854a025448dbab4aa # v4.0.2

.gitea/workflows/validate.yaml

@@ -55,7 +55,7 @@ jobs:
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - uses: azure/setup-kubectl@15650b3ad78fff148532a140b8a4c821796b2d7b # v5.0.0
-      - uses: azure/setup-helm@1a275c3b69536ee54be43f2070a358922e12c8d4 # v4
+      - uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5
         with:
           version: "3.15.0"
       - uses: azure/k8s-set-context@ae59a723ba9abe7a9655538854a025448dbab4aa # v4.0.2