Update dependency @koa/router to v13.1.1 (#171)

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

Author: renovate[bot]

package-lock.json

@@ -18,7 +18,7 @@
   "author": "Opencast Software Europe Ltd",
   "license": "MIT",
   "dependencies": {
-    "@koa/router": "13.1.0",
+    "@koa/router": "13.1.1",
     "dotenv": "16.6.1",
     "isomorphic-git": "1.31.1",
     "js-yaml": "4.1.0",