chore(package): update rollup-plugin-commonjs to version 10.0.0

Author: greenkeeper[bot]

packages/rollup-plugin-purgecss/package.json

@@ -39,7 +39,7 @@
     "jest": "^23.2.0",
     "rollup": "^0.65.1",
     "rollup-plugin-babel": "^3.0.4",
-    "rollup-plugin-commonjs": "^9.1.3",
+    "rollup-plugin-commonjs": "^10.0.0",
     "rollup-plugin-node-resolve": "^3.3.0"
   },
   "dependencies": {