fix: upgrade @apollo/client from 3.4.7 to 3.4.15

Snyk has created this PR to upgrade @apollo/client from 3.4.7 to 3.4.15.

See this package in npm:
https://www.npmjs.com/package/@apollo/client

See this project in Snyk:
https://app.snyk.io/org/reactioncommerce/project/536303cd-177f-47dd-aa8b-35217cef374d?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -70,7 +70,7 @@
     "@accounts/client": "^0.31.1",
     "@accounts/client-password": "^0.31.1",
     "@accounts/graphql-client": "^0.31.1",
-    "@apollo/client": "^3.3.15",
+    "@apollo/client": "^3.4.15",
     "@apollo/react-hooks": "^3.1.3",
     "@axa-fr/react-oidc-context": "~3.1.7",
     "@babel/runtime-corejs2": "^7.6.3",