fix(deps): update react-router monorepo to v5.3.1

Author: renovate-bot

client/package.json

@@ -27,8 +27,8 @@
     "react": "16.13.1",
     "react-dom": "16.13.1",
     "react-offix-hooks": "0.16.0-alpha2",
-    "react-router": "5.2.0",
-    "react-router-dom": "5.2.0",
+    "react-router": "5.3.1",
+    "react-router-dom": "5.3.1",
     "react-scripts": "3.4.1",
     "simpl-schema": "1.7.3",
     "subscriptions-transport-ws": "0.9.16",