Update dependency express to v5

Author: renovate[bot]

package.json

@@ -24,7 +24,7 @@
   "homepage": "https://netboot.xyz",
   "dependencies": {
     "ejs": "3.1.10",
-    "express": "4.21.2",
+    "express": "5.1.0",
     "http": "0.0.0",
     "isbinaryfile": "5.0.6",
     "js-yaml": "4.1.0",