Bump mkdirp from 1.0.3 to 1.0.4 in /desktop (#1210)

Summary:
Bumps [mkdirp](https://github.com/isaacs/node-mkdirp) from 1.0.3 to 1.0.4.
<details>
<summary>Commits</summary>
<ul>
<li><a href="b694079b54"><code>b694079</code></a> 1.0.4</li>
<li><a href="2d42170b9f"><code>2d42170</code></a> Remove unnecessary process.umask()</li>
<li><a href="4d59b810ed"><code>4d59b81</code></a> update tap</li>
<li><a href="117328b713"><code>117328b</code></a> remove outdated example</li>
<li><a href="7cd4e9eb9a"><code>7cd4e9e</code></a> correct gitignore</li>
<li>See full diff in <a href="https://github.com/isaacs/node-mkdirp/compare/v1.0.3...v1.0.4">compare view</a></li>
</ul>
</details>
<br />

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</details>
Pull Request resolved: https://github.com/facebook/flipper/pull/1210

Reviewed By: passy

Differential Revision: D21838219

Pulled By: mweststrate

fbshipit-source-id: c9fe6920a65a1fcede07579899a50620f459b949

desktop/static/package.json

@@ -13,7 +13,7 @@
     "fs-extra": "^8.1.0",
     "ignore": "^5.1.4",
     "mem": "^6.0.0",
-    "mkdirp": "^1.0.0",
+    "mkdirp": "^1.0.4",
     "p-filter": "^2.1.0",
     "p-map": "^4.0.0",
     "recursive-readdir": "^2.2.2",

desktop/yarn.lock

@@ -9312,10 +9312,10 @@ mkdirp@0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mkdirp@1.x, mkdirp@^1.0.0:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.3.tgz#4cf2e30ad45959dddea53ad97d518b6c8205e1ea"
-  integrity sha512-6uCP4Qc0sWsgMLy1EOqqS/3rjDHOEnsStVr/4vtAIK2Y5i2kA7lFFejYrpIyiN9w0pYf4ckeCYT9f1r1P9KX5g==
+mkdirp@1.x, mkdirp@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
+  integrity sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==
 
 mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@^0.5.4, mkdirp@~0.5.1:
   version "0.5.5"