fixes namespace for cert-manager

gitops-kaisers-info/templates/cert-manager.yaml

 kind: Application
 metadata:
   name: cert-manager
-  namespace: {{ .Values.spec.namespace }}
+  namespace: cert-manager
   finalizers:
   - resources-finalizer.argocd.argoproj.io
 spec:
   destination:
-    namespace: {{ .Values.spec.namespace }}
+    namespace: cert-manager
     name: {{ .Values.spec.destination.name }}
   project: {{ .Values.spec.project }}
   syncPolicy:
 kind: Application
 metadata:
   name: cert-manager-hetzner-webhook
-  namespace: {{ .Values.spec.namespace }}
+  namespace: cert-manager
   finalizers:
   - resources-finalizer.argocd.argoproj.io
 spec:
   destination:
-    namespace: {{ .Values.spec.namespace }}
+    namespace: cert-manager
     name: {{ .Values.spec.destination.name }}
   project: {{ .Values.spec.project }}
   syncPolicy:
       - name: "groupName"
         value: "acme.kaisers.info"
       - name: "certManager.namespace"
-        value: {{ .Values.spec.namespace }}
+        value: {{ .Values.spec.namespace }}
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: hetzner-secret
+  namespace: cert-manager
+type: Opaque
+data:
+  api-key: M21TS3N1bzAzTVNld1JQeW12aVFpSU5TbFhPc0lBOFU=

gitops-kaisers-info/templates/hetzner-secret.yaml

-apiVersion: v1
-kind: Secret
-metadata:
-  name: hetzner-secret
-  namespace: cert-manager
-type: Opaque
-data:
-  api-key: M21TS3N1bzAzTVNld1JQeW12aVFpSU5TbFhPc0lBOFU=