fix(deps): update graphql-tools monorepo to v6.0.16

Author: renovate-bot

server/package.json

@@ -30,8 +30,8 @@
     "@graphback/keycloak-authz": "0.14.0",
     "@graphback/datasync": "0.14.0",
     "@graphback/runtime-mongo": "0.14.0",
-    "@graphql-tools/graphql-file-loader": "6.0.15",
-    "@graphql-tools/load": "6.0.15",
+    "@graphql-tools/graphql-file-loader": "6.0.16",
+    "@graphql-tools/load": "6.0.16",
     "@types/react": "16.9.36",
     "apollo-server-express": "2.16.0",
     "cors": "2.8.5",