Update dependency eslint-plugin-react to v7

Author: renovate-bot

package.json

@@ -18,7 +18,7 @@
     "eslint-config-airbnb": "14.1.0",
     "eslint-plugin-import": "2.12.0",
     "eslint-plugin-jsx-a11y": "4.0.0",
-    "eslint-plugin-react": "6.10.3",
+    "eslint-plugin-react": "7.26.1",
     "istanbul": "0.4.4",
     "mocha": "3.2.0"
   }