chore: update @asyncapi/generator to 1.9.4 version (#266)

Author: asyncapi-bot

package-lock.json

@@ -34,7 +34,7 @@
     "lodash": "^4.17.15"
   },
   "devDependencies": {
-    "@asyncapi/generator": "^1.9.3",
+    "@asyncapi/generator": "^1.9.4",
     "@semantic-release/commit-analyzer": "^8.0.1",
     "@semantic-release/github": "^7.0.4",
     "@semantic-release/npm": "^7.1.3",