chore(deps): update dependency helm/helm to v3.15.1 (#304)

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [helm/helm](https://togithub.com/helm/helm) | patch | `v3.15.0` ->
`v3.15.1` |

---

### Release Notes

<details>
<summary>helm/helm (helm/helm)</summary>

###
[`v3.15.1`](https://togithub.com/helm/helm/compare/v3.15.0...v3.15.1)

[Compare
Source](https://togithub.com/helm/helm/compare/v3.15.0...v3.15.1)

</details>

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Dockerfile

@@ -13,7 +13,7 @@ FROM downloader AS helm
 ARG TARGETOS
 ARG TARGETARCH
 # renovate: datasource=github-releases depName=helm/helm
-ARG HELM_VERSION=v3.15.0
+ARG HELM_VERSION=v3.15.1
 RUN curl -fsSL \
       https://get.helm.sh/helm-${HELM_VERSION}-${TARGETOS}-${TARGETARCH}.tar.gz \
     | tar -xzf - --strip-components=1 ${TARGETOS}-${TARGETARCH}/helm