chore: bump openapi-generator to v6.0.1

Ticket: DX-3251

Author: starfy84

package-lock.json

@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "@api-ts/io-ts-http": "^3.2.1",
-    "@api-ts/openapi-generator": "^5.7.0",
+    "@api-ts/openapi-generator": "^6.0.1",
     "@api-ts/response": "^2.1.0",
     "@api-ts/superagent-wrapper": "^1.3.3",
     "@api-ts/typed-express-router": "2.0.0",