fix: add copy-resources to build dependencies

Ensures error-page.html template is copied to lib/templates during build.

Author: deepu-mungamuri94

package.json

@@ -91,7 +91,8 @@
     "build": {
       "dependencies": [
         "compile",
-        "lint"
+        "lint",
+        "copy-resources"
       ]
     },
     "compile": {