fix: upgrade @graphql-tools/merge from 8.2.11 to 8.2.13

Snyk has created this PR to upgrade @graphql-tools/merge from 8.2.11 to 8.2.13.

See this package in npm:
https://www.npmjs.com/package/@graphql-tools/merge

See this project in Snyk:
https://app.snyk.io/org/acinader/project/21343059-02d9-4182-87d7-718a44b181ef?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -20,7 +20,7 @@
   "license": "BSD-3-Clause",
   "dependencies": {
     "@graphql-yoga/node": "2.6.0",
-    "@graphql-tools/merge": "8.2.11",
+    "@graphql-tools/merge": "8.2.13",
     "@graphql-tools/schema": "8.3.11",
     "@graphql-tools/utils": "8.6.10",
     "@parse/fs-files-adapter": "1.2.2",