Bump mkdirp from 0.5.0 to 1.0.4

Bumps [mkdirp](https://github.com/isaacs/node-mkdirp) from 0.5.0 to 1.0.4.
- [Release notes](https://github.com/isaacs/node-mkdirp/releases)
- [Changelog](https://github.com/isaacs/node-mkdirp/blob/master/CHANGELOG.md)
- [Commits](isaacs/node-mkdirp@0.5.0...v1.0.4)

Signed-off-by: dependabot-preview[bot] <[email protected]>

package.json

@@ -37,7 +37,7 @@
     "express": "^4.17.1",
     "liftoff": "^2.2.0",
     "lru-cache": "^6.0.0",
-    "mkdirp": "0.5.0",
+    "mkdirp": "1.0.4",
     "path-is-absolute": "^2.0.0",
     "semver": "^7.3.2",
     "socket.io": "^2.3.0",

yarn.lock

@@ -1762,18 +1762,16 @@ minimist@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
 
-[email protected]:
-  version "0.5.0"
-  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.0.tgz#1d73076a6df986cd9344e15e71fcc05a4c9abf12"
-  dependencies:
-    minimist "0.0.8"
-
 [email protected]:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
     minimist "0.0.8"
 
+[email protected]:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-1.0.4.tgz#3eb5ed62622756d79a5f0e2a221dfebad75c2f7e"
+
 mocha@^8.0.1:
   version "8.0.1"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.0.1.tgz#fe01f0530362df271aa8f99510447bc38b88d8ed"