fix(package): update react-apollo to version 3.1.0

Closes #26

Author: greenkeeper[bot]

package.json

@@ -11,7 +11,7 @@
     "graphql": "^14.0.2",
     "graphql-tag": "^2.10.0",
     "react": "^16.6.0",
-    "react-apollo": "^2.2.4",
+    "react-apollo": "^3.1.0",
     "react-dom": "^16.6.0",
     "react-router-dom": "^4.3.1",
     "react-scripts": "3.1.0",