Update dependency eslint to v9

package.json

@@ -38,7 +38,7 @@
 		"babel-preset-es2015": "6.24.1",
 		"babel-register": "6.26.0",
 		"chai": "3.5.0",
-		"eslint": "3.19.0",
+		"eslint": "9.15.0",
 		"eslint-plugin-babel": "3.3.0",
 		"mocha": "3.5.3",
 		"rimraf": "2.6.3",