allow mercurius@16 (#26)

Author: trim21

package.json

@@ -48,7 +48,7 @@
     "graphql": "^16.6.0",
     "graphql-tag": "^2.12.6",
     "husky": "^8.0.3",
-    "mercurius": "^15.0.0",
+    "mercurius": "^16.0.0",
     "mqemitter": "^5.0.0",
     "prettier": "^2.8.4",
     "pretty-quick": "^3.1.3",
@@ -61,7 +61,7 @@
     "@mercuriusjs/gateway": "^1.2.0",
     "fastify": "^4.0.0 || ^5.0.0",
     "graphql": "*",
-    "mercurius": "^12 || ^13 || ^14 || ^15"
+    "mercurius": "^12 || ^13 || ^14 || ^15 || ^16"
   },
   "peerDependenciesMeta": {
     "@mercuriusjs/federation": {