Update dependency eslint-plugin-react to v7

Author: renovate-bot

package.json

@@ -94,7 +94,7 @@
     "eslint-plugin-immutable": "1.0.0",
     "eslint-plugin-import": "2.8.0",
     "eslint-plugin-jsx-a11y": "4.0.0",
-    "eslint-plugin-react": "6.10.3",
+    "eslint-plugin-react": "7.9.0",
     "extract-text-webpack-plugin": "1.0.1",
     "file-loader": "0.11.2",
     "flow-bin": "0.43.1",