Tighten the concat dependency

Since concat 2.0.x releases have been removed

Author: Morgan Haskel

Diff for: metadata.json

@@ -69,6 +69,6 @@
   "dependencies": [
     {"name":"puppetlabs/stdlib","version_requirement":"4.x"},
     {"name":"puppetlabs/apt","version_requirement":">=1.8.0 <3.0.0"},
-    {"name":"puppetlabs/concat","version_requirement":">= 1.1.0 <3.0.0"}
+    {"name":"puppetlabs/concat","version_requirement":">= 1.1.0 <2.0.0"}
   ]
 }