Renovate: Ignore Mailcow subproject.
diff --git a/renovate.json b/renovate.json
index a92866a..9622671 100644
--- a/renovate.json
+++ b/renovate.json
@@ -3,4 +3,7 @@
   [ "local>mulk/renovate-config"
   , ":automergePatch"
   ]
+, "ignorePaths":
+  [ "mailcow/src/**"
+  ]
 }