Update dependency express-session to v1.18.1

Author: renovate[bot]

package.json

@@ -13,7 +13,7 @@
     "cookie-parser": "1.4.6",
     "discord.js": "13.17.1",
     "express": "4.19.2",
-    "express-session": "1.18.0",
+    "express-session": "1.18.1",
     "fs-nextra": "0.5.1",
     "is-html": "3.1.0",
     "is-url": "1.2.4",