fix(k8s): Move nixery-secrets to the correct namespace

infra/kubernetes/nixery/secrets.yaml

@@ -4,6 +4,11 @@
 # Not all of the values are actually secret (see the matching)
 ---
 apiVersion: v1
+kind: Secret
+metadata:
+  name: nixery-secrets
+  namespace: kube-public
+type: Opaque
 data:
   gcs-key.json: {{ passLookup "nixery-gcs-json" | b64enc }}
   gcs-key.pem: {{ passLookup "nixery-gcs-pem" | b64enc }}
@@ -11,9 +16,3 @@ data:
   id_nixery.pub: {{ insertFile "id_nixery.pub" | b64enc }}
   known_hosts: {{ insertFile "known_hosts" | b64enc }}
   ssh_config: {{ insertFile "ssh_config" | b64enc }}
-kind: Secret
-metadata:
-  creationTimestamp: null
-  name: nixery-secrets
-  selfLink: /api/v1/namespaces/kube-public/secrets/nixery-secrets
-type: Opaque