chore: fastify upgrade router options to avoid warning

Author: capJavert

src/index.ts

@@ -73,7 +73,9 @@ export default async function app(
     logger: loggerConfig,
     disableRequestLogging: true,
     trustProxy: true,
-    useSemicolonDelimiter: true,
+    routerOptions: {
+      useSemicolonDelimiter: true,
+    },
   });
 
   app.log.info('loading features');