chore(deps): update dependency koa to v3 [security]

Author: renovate-bot

package.json

@@ -56,7 +56,7 @@
     "gts": "^5.0.0",
     "js-green-licenses": "^4.0.0",
     "json-stable-stringify": "^1.0.1",
-    "koa": "^2.7.0",
+    "koa": "^3.0.1",
     "linkinator": "^4.0.0",
     "mocha": "^9.2.2",
     "nock": "^13.0.0",