chore(salt-lint): ignore violation [skip ci]

```
[213] SaltStack recommends using cmd.run together with onchanges, rather than cmd.wait
exim/config/aliases.sls:57
  cmd.wait:
```

Usually fix:

* `cmd.wait` + `watch`

To:

* `cmd.run` + `onchanges`

But this code doesn't use that construction, so leaving as-is.

exim/config/aliases.sls

@@ -54,5 +54,5 @@ exim/virtual-aliases/{{ domain }}:
 {%- endfor %}
 
 exim/newaliases:
-  cmd.wait:
+  cmd.wait:  # noqa: 213
     - name: newaliases