fix(package): update chokidar to version 3.0.0

Author: greenkeeper[bot]

package.json

@@ -45,7 +45,7 @@
     "archiver": "3.0.0",
     "camelcase": "^5.3.1",
     "chalk": "2.4.2",
-    "chokidar": "^2.1.5",
+    "chokidar": "^3.0.0",
     "decompress": "4.2.0",
     "dotenv": "^7.0.0",
     "fs-extra": "7.0.0",