chore(package): update rollup to version 2.3.3

Closes #10

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "eslint-plugin-react-hooks": "^2.3.0",
     "husky": "^4.0.10",
     "jest": "^24.9.0",
-    "rollup": "^1.21.4",
+    "rollup": "^2.3.3",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-terser": "^5.1.3",
     "standard-version": "^7.0.0"