Update dependency @types/koa-session to v5.10.3

Author: renovate-bot

packages/web-server/package.json

@@ -81,7 +81,7 @@
     "@types/koa-helmet": "5.2.0",
     "@types/koa-router": "7.4.1",
     "@types/koa-send": "4.1.2",
-    "@types/koa-session": "5.10.2",
+    "@types/koa-session": "5.10.3",
     "@types/methods": "1.1.1",
     "@types/node": "14.0.18",
     "@types/react-dom": "16.9.8",