fix(deps): update dependency graphql-tools to v7

Author: renovate-bot

package.json

@@ -26,7 +26,7 @@
     "@types/express": "^4.17.2",
     "express": "^4.17.1",
     "graphql": "^14.4.2",
-    "graphql-tools": "^4.0.5",
+    "graphql-tools": "^7.0.0",
     "jsonwebtoken": "^8.5.1",
     "mamushi": "^2.0.0",
     "node-fetch": "^2.6.0",