Support latest stdlib and concat modules

metadata.json

@@ -10,11 +10,11 @@
   "dependencies": [
     {
       "name": "puppetlabs/stdlib",
-      "version_requirement": ">= 2.0.1 <7.0.0"
+      "version_requirement": ">= 2.0.1 <9.0.0"
     },
     {
       "name": "puppetlabs/concat",
-      "version_requirement": ">= 1.0.0 <7.0.0"
+      "version_requirement": ">= 1.0.0 <8.0.0"
     }
   ],
   "operatingsystem_support": [