build(deps): bump @graphql-tools/schema in /backend

Bumps [@graphql-tools/schema](https://github.com/ardatan/graphql-tools/tree/HEAD/packages/schema) from 10.0.4 to 10.0.5.
- [Release notes](https://github.com/ardatan/graphql-tools/releases)
- [Changelog](https://github.com/ardatan/graphql-tools/blob/master/packages/schema/CHANGELOG.md)
- [Commits](https://github.com/ardatan/graphql-tools/commits/@graphql-tools/schema@10.0.5/packages/schema)

---
updated-dependencies:
- dependency-name: "@graphql-tools/schema"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

backend/package.json

@@ -30,7 +30,7 @@
   "dependencies": {
     "@apollo/server": "^4.10.5",
     "@getbrevo/brevo": "^2.2.0",
-    "@graphql-tools/schema": "^10.0.4",
+    "@graphql-tools/schema": "^10.0.5",
     "@graphql-yoga/subscription": "^5.0.1",
     "@prisma/client": "^5.17.0",
     "@types/express": "^4.17.21",