Bump @apollo/client from 3.3.19 to 3.3.20 (#52)

Bumps [@apollo/client](https://github.com/apollographql/apollo-client) from 3.3.19 to 3.3.20.
- [Release notes](https://github.com/apollographql/apollo-client/releases)
- [Changelog](https://github.com/apollographql/apollo-client/blob/main/CHANGELOG.md)
- [Commits](apollographql/apollo-client@v3.3.19...v3.3.20)

package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "license": "MIT",
   "dependencies": {
-    "@apollo/client": "^3.3.19",
+    "@apollo/client": "^3.3.20",
     "graphql": "^15.5.0",
     "react": "^16.14.0",
     "react-dom": "^16.14.0"