chore(deps): update dependency rollup to v2 [security]

Author: renovate[bot]

Diff for: package.json

@@ -73,7 +73,7 @@
     "prettier": "1.15.x",
     "qs": "6.6.x",
     "rimraf": "2.6.x",
-    "rollup": "0.67.x",
+    "rollup": "2.79.2",
     "rollup-plugin-local-resolve": "1.0.x",
     "rollup-plugin-sourcemaps": "0.4.x",
     "snake-case": "2.1.x",