chore(): update mercurius peer dependency version to be less strict

Author: kamilmysliwiec

packages/mercurius/package.json

@@ -38,6 +38,6 @@
     "@nestjs/common": "^8.2.3",
     "@nestjs/graphql": "^9.1.2",
     "fastify": "^3.25.0",
-    "mercurius": "^8.12.0"
+    "mercurius": "^8.12.0 || ^9.0.0"
   }
 }