chore(deps): update dependency mkdirp to v3

Author: renovate[bot]

package-lock.json

@@ -59,7 +59,7 @@
     "lodash.defaultsdeep": "4.6.1",
     "minilog": "3.1.0",
     "minimist": "1.2.8",
-    "mkdirp": "1.0.4",
+    "mkdirp": "3.0.1",
     "nets": "3.2.0",
     "postcss-import": "12.0.1",
     "postcss-simple-vars": "5.0.2",