build(deps-dev): bump @types/node from 11.13.8 to 11.13.9

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 11.13.8 to 11.13.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

package.json

@@ -116,7 +116,7 @@
     "@types/mime-types": "^2.1.0",
     "@types/minimist": "^1.2.0",
     "@types/mocha": "^5.1.0",
-    "@types/node": "^11.13.8",
+    "@types/node": "^11.13.9",
     "@types/node-fetch": "^2.3.3",
     "@types/opn": "^5.1.0",
     "@types/pify": "^3.0.1",

yarn.lock

@@ -1074,10 +1074,10 @@
   dependencies:
     "@types/node" "*"
 
-"@types/node@*", "@types/node@^11.13.8":
-  version "11.13.8"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.8.tgz#e5d71173c95533be9842b2c798978f095f912aab"
-  integrity sha512-szA3x/3miL90ZJxUCzx9haNbK5/zmPieGraZEe4WI+3srN0eGLiT22NXeMHmyhNEopn+IrxqMc7wdVwvPl8meg==
+"@types/node@*", "@types/node@^11.13.9":
+  version "11.13.9"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-11.13.9.tgz#f80697caca7f7fb2526527a5c5a2743487f05ccc"
+  integrity sha512-NJ4yuEVw5podZbINp3tEqUIImMSAEHaCXRiWCf3KC32l6hIKf0iPJEh2uZdT0fELfRYk310yLmMXqy2leZQUbg==
 
 "@types/opn@^5.1.0":
   version "5.1.0"