Hardcode cert-manager in helmfile since its not a template

ansible/group_vars/all/oas.yml

@@ -49,7 +49,6 @@ rke:
   checksum: 'sha256:7c05727aa3d6f8c4b5f60b057f1fe7883af48d5a778e3b1668f178dda84883ee'
 
 cert_manager:
-  version: '0.9.1'
   # cert-manager requires custom resource definitions applied before installing
   # the helm chart. See https://hub.helm.sh/charts/jetstack/cert-manager for
   # details

helmfiles/helmfile.d/05-cert-manager.yaml

@@ -11,7 +11,7 @@ releases:
   - name: "oas-{{ .Environment.Values.releaseName }}-cert-manager"
     namespace: "cert-manager"
     chart: "jetstack/cert-manager"
-    version: '{{ cert_manager.version }}'
+    version: "0.9.1"
     values:
     - "../values/cert-manager.yaml.gotmpl"
     wait: false