chore(deps-dev): bump @types/koa from 2.11.8 to 2.13.0

Bumps [@types/koa](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/koa) from 2.11.8 to 2.13.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/koa)

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

package.json

@@ -37,7 +37,7 @@
   "devDependencies": {
     "@types/cheerio": "0.22.24",
     "@types/got": "9.6.11",
-    "@types/koa": "2.11.8",
+    "@types/koa": "2.13.0",
     "@vuepress/plugin-back-to-top": "1.8.2",
     "@vuepress/plugin-google-analytics": "1.8.2",
     "@vuepress/plugin-pwa": "1.8.2",

yarn.lock

@@ -1696,10 +1696,10 @@
   dependencies:
     "@types/koa" "*"
 
-"@types/koa@*", "@types/koa@2.11.8":
-  version "2.11.8"
-  resolved "https://registry.yarnpkg.com/@types/koa/-/koa-2.11.8.tgz#b3fa4bf0baa518b71cb0c14b8a354b6292bea883"
-  integrity sha512-8LJHhlEjxvEb9MR06zencOxZyxpTHG2u6pcvJbSBN9DRBc+GYQ9hFI8sSH7dvYoITKeAGWo2eVPKx1Z/zX/yKw==
+"@types/koa@*", "@types/koa@2.13.0":
+  version "2.13.0"
+  resolved "https://registry.yarnpkg.com/@types/koa/-/koa-2.13.0.tgz#6356c48521c0941103b6fcfb97bb01426a99d56d"
+  integrity sha512-hNs1Z2lX+R5sZroIy/WIGbPlH/719s/Nd5uIjSIAdHn9q+g7z6mxOnhwMjK1urE4/NUP0SOoYUOD4MnvD9FRNw==
   dependencies:
     "@types/accepts" "*"
     "@types/content-disposition" "*"