chore(package): update eslint-plugin-react to version 7.15.0

Closes #43

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "eslint-config-xo-react": "^0.17.0",
     "eslint-config-xo-space": "^0.20.0",
     "eslint-plugin-jsx-a11y": "^6.1.1",
-    "eslint-plugin-react": "7.11.0"
+    "eslint-plugin-react": "7.15.0"
   },
   "peerDependencies": {
     "eslint": "^5.3.0",