fix: upgrade @graphql-tools/links from 8.2.7 to 8.2.8

Snyk has created this PR to upgrade @graphql-tools/links from 8.2.7 to 8.2.8.

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

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

@@ -21,7 +21,7 @@
   "dependencies": {
     "@apollo/client": "3.5.9",
     "@apollographql/graphql-playground-html": "1.6.29",
-    "@graphql-tools/links": "8.2.7",
+    "@graphql-tools/links": "8.2.8",
     "@graphql-tools/stitch": "6.2.4",
     "@graphql-tools/utils": "6.2.4",
     "@parse/fs-files-adapter": "1.2.1",