Update npm non-major dependencies (#549)

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

@@ -10,10 +10,10 @@
     "node": "~22.12.0"
   },
   "dependencies": {
-    "express": "~4.20.0",
-    "grunt-cli": "~1.4.0",
+    "express": "~4.21.0",
+    "grunt-cli": "~1.5.0",
     "mustache": "~4.2.0",
-    "socket.io": "~4.7.0"
+    "socket.io": "~4.8.0"
   },
   "license": "MIT"
 }