[Dev Deps] update babel-eslint, coveralls, eslint, mocha

Author: ljharb

package.json

@@ -30,11 +30,11 @@
     "prop-types": "^15.6.1"
   },
   "devDependencies": {
-    "babel-eslint": "^8.2.1",
-    "coveralls": "^3.0.0",
-    "eslint": "^4.18.0",
+    "babel-eslint": "^8.2.3",
+    "coveralls": "^3.0.1",
+    "eslint": "^4.19.1",
     "istanbul": "^0.4.5",
-    "mocha": "^5.0.1"
+    "mocha": "^5.2.0"
   },
   "peerDependencies": {
     "eslint": "^3.0.0 || ^4.0.0"