Bump @koa/cors from 4.0.0 to 5.0.0

Bumps [@koa/cors](https://github.com/koajs/cors) from 4.0.0 to 5.0.0.
- [Changelog](https://github.com/koajs/cors/blob/master/History.md)
- [Commits](koajs/cors@4.0.0...5.0.0)

---
updated-dependencies:
- dependency-name: "@koa/cors"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -21,7 +21,7 @@
     "url": "https://github.com/bacchus-snu/id/issues"
   },
   "dependencies": {
-    "@koa/cors": "^4.0.0",
+    "@koa/cors": "^5.0.0",
     "@phc/format": "^1.0.0",
     "argon2": "^0.31.1",
     "bunyan": "^1.8.15",

yarn.lock

@@ -151,6 +151,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@koa/cors@npm:^5.0.0":
+  version: 5.0.0
+  resolution: "@koa/cors@npm:5.0.0"
+  dependencies:
+    vary: ^1.1.2
+  checksum: 050701fb57dede2fefe0217459782bab7c9488fd07ff1f87fff680005cab43e03b7509e6015ea68082aadb1b31fe3eea7858ebdc93a2cf6f26d36d071190d50c
+  languageName: node
+  linkType: hard
+
 "@koa/router@npm:^12.0.0":
   version: 12.0.0
   resolution: "@koa/router@npm:12.0.0"
@@ -970,7 +979,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "bacchus-id@workspace:."
   dependencies:
-    "@koa/cors": ^4.0.0
+    "@koa/cors": ^5.0.0
     "@phc/format": ^1.0.0
     "@types/bunyan": ^1.8.9
     "@types/koa": ^2.13.9