Bump helm.sh/helm/v3 from 3.15.0 to 3.15.1 in /tests (#365)

Bumps [helm.sh/helm/v3](https://github.com/helm/helm) from 3.15.0 to 3.15.1.
- [Release notes](https://github.com/helm/helm/releases)
- [Commits](https://github.com/helm/helm/compare/v3.15.0...v3.15.1)

---
updated-dependencies:
- dependency-name: helm.sh/helm/v3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tests/go.mod

@@ -6,7 +6,7 @@ toolchain go1.22.2
 require (
 	github.com/onsi/ginkgo/v2 v2.18.0
 	github.com/onsi/gomega v1.33.1
-	helm.sh/helm/v3 v3.15.0
+	helm.sh/helm/v3 v3.15.1
 )
 
 require (