Bump graphql-tools from 6.2.4 to 7.0.2 (#260)

Bumps [graphql-tools](https://github.com/ardatan/graphql-tools) from 6.2.4 to 7.0.2.
- [Release notes](https://github.com/ardatan/graphql-tools/releases)
- [Commits](https://github.com/ardatan/graphql-tools/compare/graphql-tools@6.2.4...graphql-tools@7.0.2)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/backend/package.json

@@ -26,7 +26,7 @@
     "express-graphql": "^0.11.0",
     "graphql": "^15.3.0",
     "graphql-tag": "^2.10.4",
-    "graphql-tools": "^6.0.15",
+    "graphql-tools": "^7.0.2",
     "imgix-core-js": "^2.3.1",
     "node-fetch": "^2.6.0",
     "graphql-request": "^3.0.0-next.4",