Update dependency express to v5

Author: renovate[bot]

package.json

@@ -25,7 +25,7 @@
     "browserslist-to-esbuild": "2.1.1",
     "connected-react-router": "6.9.3",
     "cookie-parser": "1.4.5",
-    "express": "4.20.0",
+    "express": "5.1.0",
     "husky": "9.1.7",
     "i18next": "25.3.2",
     "i18next-browser-languagedetector": "8.2.0",