build(deps): bump helm.sh/helm/v3 from 3.18.5 to 3.18.6 (#274)

Bumps [helm.sh/helm/v3](https://github.com/helm/helm) from 3.18.5 to 3.18.6.
- [Release notes](https://github.com/helm/helm/releases)
- [Commits](https://github.com/helm/helm/compare/v3.18.5...v3.18.6)

---
updated-dependencies:
- dependency-name: helm.sh/helm/v3
  dependency-version: 3.18.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/spf13/pflag v1.0.7
 	golang.org/x/oauth2 v0.30.0
 	golang.org/x/sync v0.16.0
-	helm.sh/helm/v3 v3.18.5
+	helm.sh/helm/v3 v3.18.6
 	k8s.io/api v0.33.4
 	k8s.io/apiextensions-apiserver v0.33.4
 	k8s.io/apimachinery v0.33.4