[eslint config] sort peerDependencies in alphabetical order

Author: 1pete

packages/eslint-config-airbnb/package.json

@@ -66,8 +66,8 @@
   },
   "peerDependencies": {
     "eslint": "^4.8.0",
-    "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-import": "^2.7.0",
+    "eslint-plugin-jsx-a11y": "^6.0.2",
     "eslint-plugin-react": "^7.4.0"
   },
   "engines": {