Exclude 'cpanfile' from Renovate (#279)

The Perl ecosystem is generally pretty good about managing its dependencies. Specifying
minimum requirements is usually capability-based.

Author: ehuelsmann

.github/renovate.json

@@ -2,5 +2,8 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "github>cucumber/renovate-config"
-  ]
+  ],
+  "cpanfile": {
+    "enabled": false
+  }
 }