chore(deps): update dependency @types/koa to v2.11.6

package.json

@@ -49,7 +49,7 @@
     "@types/debug": "4.1.5",
     "@types/extract-text-webpack-plugin": "3.0.4",
     "@types/html-webpack-plugin": "3.2.3",
-    "@types/koa": "2.11.5",
+    "@types/koa": "2.11.6",
     "@types/koa-bodyparser": "5.0.2",
     "@types/koa-mount": "3.0.1",
     "@types/koa-router": "7.4.1",

yarn.lock

@@ -1032,10 +1032,10 @@
     "@types/koa-compose" "*"
     "@types/node" "*"
 
-"@types/[email protected].5":
-  version "2.11.5"
-  resolved "https://registry.yarnpkg.com/@types/koa/-/koa-2.11.5.tgz#a2b81382bf65d72bdc3bd906abdee259fefdebc2"
-  integrity sha512-egP+ceD3+v9PnFW+DLTFO8mt6wa5sDqfGOBIwOAZ61Wzsq4bGZc5kMpJgcCwq7ARGIBfHBY+KkK/1RsMftV/qQ==
+"@types/[email protected].6":
+  version "2.11.6"
+  resolved "https://registry.yarnpkg.com/@types/koa/-/koa-2.11.6.tgz#b7030caa6b44af801c2aea13ba77d74aff7484d5"
+  integrity sha512-BhyrMj06eQkk04C97fovEDQMpLpd2IxCB4ecitaXwOKGq78Wi2tooaDOWOFGajPk8IkQOAtMppApgSVkYe1F/A==
   dependencies:
     "@types/accepts" "*"
     "@types/content-disposition" "*"