fix(deps): update dependency koa-session to v5.13.1

Author: renovate-bot

package-lock.json

@@ -40,7 +40,7 @@
     "koa-bodyparser": "4.2.1",
     "koa-pino-logger": "2.1.3",
     "koa-router": "7.4.0",
-    "koa-session": "5.12.3",
+    "koa-session": "5.13.1",
     "lodash": "4.17.15",
     "memoizee": "0.4.14",
     "mysql2": "2.1.0",