Update dependency koa to v3

Author: renovate[bot]

package.json

@@ -11,7 +11,7 @@
     "dedent": "^1.0.0",
     "execa": "^5.0.0",
     "inspectpack": "^4.7.1",
-    "koa": "^2.5.2",
+    "koa": "^3.0.0",
     "koa-compress": "^5.0.0",
     "koa-static": "^5.0.0",
     "lighthouse": "^9.0.0",
@@ -26,7 +26,7 @@
     "@relmify/jest-serializer-strip-ansi": "^1.0.2",
     "@types/dedent": "^0.7.0",
     "@types/jest": "^29.0.3",
-    "@types/koa": "^2.13.5",
+    "@types/koa": "^3.0.0",
     "@types/koa-compress": "^4.0.0",
     "@types/koa-static": "^4.0.1",
     "@types/node": "^22.0.0",