chore(deps): update dependency express to v5 (#2279)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/openapi-fetch/package.json

@@ -74,7 +74,7 @@
     "del-cli": "^6.0.0",
     "esbuild": "^0.25.3",
     "execa": "^9.5.2",
-    "express": "^4.21.2",
+    "express": "^5.0.0",
     "feature-fetch": "^0.0.43",
     "node-forge": "^1.3.1",
     "openapi-typescript": "workspace:^",