chore(deps): update dependency buildkite/helm to v3.20.0-1

Author: renovate[bot]

roles/helm/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: helm
 description: Documentation generator for helm Ansible role
 home: https://buildkite.com/organizations/helm-linux/packages/registries/helm-debian
-version: 3.19.0-1
+version: 3.20.0-1
 dependencies:
   - name: diff
     repository: https://github.com/databus23/helm-diff

roles/helm/defaults/main.yaml

@@ -20,4 +20,4 @@ helm_vars:
         channel: stable
         key: gpgkey
         url: https://packages.buildkite.com/helm-linux/helm-debian
-      version: v3.19.0-1
+      version: v3.20.0-1