Bump @types/webpack-env from 1.13.0 to 1.13.9

Bumps [@types/webpack-env](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/webpack-env) from 1.13.0 to 1.13.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/webpack-env)

package.json

@@ -7,7 +7,7 @@
     "@types/fs-promise": "1.0.1",
     "@types/js-yaml": "^3.11.2",
     "@types/node": "^12.0.2",
-    "@types/webpack-env": "1.13.0",
+    "@types/webpack-env": "1.13.9",
     "app-builder-lib": "^20.41.0",
     "apply-loader": "0.1.0",
     "awesome-typescript-loader": "^5.0.0",

yarn.lock

@@ -101,9 +101,10 @@
     "@types/glob" "*"
     "@types/node" "*"
 
-"@types/webpack-env@1.13.0":
-  version "1.13.0"
-  resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.13.0.tgz#3044381647e11ee973c5af2e925323930f691d80"
+"@types/webpack-env@1.13.9":
+  version "1.13.9"
+  resolved "https://registry.yarnpkg.com/@types/webpack-env/-/webpack-env-1.13.9.tgz#a67287861c928ebf4159a908d1fb1a2a34d4097a"
+  integrity sha512-p8zp5xqkly3g4cCmo2mKOHI9+Z/kObmDj0BmjbDDJQlgDTiEGTbm17MEwTAusV6XceCy+bNw9q/ZHXHyKo3zkg==
 
 "@webassemblyjs/ast@1.8.5":
   version "1.8.5"