Update dependency react-apollo to v3

Author: renovate-bot

react-client/package.json

@@ -23,7 +23,7 @@
     "graphql-tag": "^2.10.0",
     "nodemon": "^1.18.6",
     "react": "^16.6.3",
-    "react-apollo": "^2.2.4",
+    "react-apollo": "^3.0.0",
     "react-dom": "^16.6.3",
     "react-router-dom": "^4.3.1",
     "react-scripts": "2.1.1",