fix(package): update dedupe to version 3.0.2

Closes #129

Author: greenkeeper[bot]

package.json

@@ -76,7 +76,7 @@
     "camel-case": "^3.0.0",
     "clean-css": "^4.1.9",
     "debug": "^2.6.9",
-    "dedupe": "^2.1.0",
+    "dedupe": "^3.0.2",
     "deepmerge": "^2.0.0",
     "html-minifier": "^3.5.5",
     "lru-cache": "^4.1.1",