Update dependency express to ~5.2.0 (#563)

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

Author: renovate[bot]

themes/hugo-theme-altinn/static/revealjs/plugin/multiplex/package.json

@@ -10,7 +10,7 @@
     "node": "~24.13.0"
   },
   "dependencies": {
-    "express": "~5.1.0",
+    "express": "~5.2.0",
     "grunt-cli": "~1.5.0",
     "mustache": "~4.2.0",
     "socket.io": "~4.8.0"