chore(deps-dev): bump koa from 2.15.2 to 2.15.3

Bumps [koa](https://github.com/koajs/koa) from 2.15.2 to 2.15.3.
- [Changelog](https://github.com/koajs/koa/blob/2.15.3/History.md)
- [Commits](koajs/koa@2.15.2...2.15.3)

---
updated-dependencies:
- dependency-name: koa
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/platform/platform-koa/package.json

@@ -72,7 +72,7 @@
     "@types/koa__router": "12.0.4",
     "eslint": "^8.57.0",
     "jest": "^29.7.0",
-    "koa": "2.15.2",
+    "koa": "2.15.3",
     "koa-bodyparser": "4.4.1",
     "koa-compress": "5.1.1",
     "koa-override": "3.0.0",

yarn.lock

@@ -7367,7 +7367,7 @@ __metadata:
     encodeurl: "npm:^2.0.0"
     eslint: "npm:^8.57.0"
     jest: "npm:^29.7.0"
-    koa: "npm:2.15.2"
+    koa: "npm:2.15.3"
     koa-bodyparser: "npm:4.4.1"
     koa-compress: "npm:5.1.1"
     koa-override: "npm:3.0.0"
@@ -19997,7 +19997,38 @@ __metadata:
   languageName: node
   linkType: hard
 
-"koa@npm:2.15.2, koa@npm:^2.14.2":
+"koa@npm:2.15.3":
+  version: 2.15.3
+  resolution: "koa@npm:2.15.3"
+  dependencies:
+    accepts: "npm:^1.3.5"
+    cache-content-type: "npm:^1.0.0"
+    content-disposition: "npm:~0.5.2"
+    content-type: "npm:^1.0.4"
+    cookies: "npm:~0.9.0"
+    debug: "npm:^4.3.2"
+    delegates: "npm:^1.0.0"
+    depd: "npm:^2.0.0"
+    destroy: "npm:^1.0.4"
+    encodeurl: "npm:^1.0.2"
+    escape-html: "npm:^1.0.3"
+    fresh: "npm:~0.5.2"
+    http-assert: "npm:^1.3.0"
+    http-errors: "npm:^1.6.3"
+    is-generator-function: "npm:^1.0.7"
+    koa-compose: "npm:^4.1.0"
+    koa-convert: "npm:^2.0.0"
+    on-finished: "npm:^2.3.0"
+    only: "npm:~0.0.2"
+    parseurl: "npm:^1.3.2"
+    statuses: "npm:^1.5.0"
+    type-is: "npm:^1.6.16"
+    vary: "npm:^1.1.2"
+  checksum: 10/b2c2771a4ee5268f9d039ce025b9c3798a0baba8c3cf3895a6fc2d286363e0cd2c98c02a5b87f14100baa2bc17d854eed6ed80f9bd41afda1d056f803b206514
+  languageName: node
+  linkType: hard
+
+"koa@npm:^2.14.2":
   version: 2.15.2
   resolution: "koa@npm:2.15.2"
   dependencies: