chore(deps): update dependency norwoodj/helm-docs to v1.8.1

cli/Dockerfile

@@ -77,7 +77,7 @@ RUN curl -L https://github.com/mikefarah/yq/releases/download/${YQ_VERSION}/yq_l
 FROM registry.fedoraproject.org/fedora:35 as helm-docs
 
 # renovate: datasource=github-releases depName=norwoodj/helm-docs
-ARG HELM_DOCS_VERSION=v1.7.0
+ARG HELM_DOCS_VERSION=v1.8.1
 ENV HELM_DOCS_VERSION=${HELM_DOCS_VERSION}
 
 RUN curl -L https://github.com/norwoodj/helm-docs/releases/download/${HELM_DOCS_VERSION}/helm-docs_$(sed 's/^v//g' <<<${HELM_DOCS_VERSION})_Linux_x86_64.tar.gz | tar xvzf - helm-docs \