chore(deps): update dependency mkdirp to v3

Author: renovate[bot]

package.json

@@ -189,7 +189,7 @@
     "expect": "24.1.0",
     "lnfs-cli": "^2.1.0",
     "lodash": "^4.17.11",
-    "mkdirp": "^0.5.1",
+    "mkdirp": "^3.0.1",
     "mocha": "^6.1.4",
     "mock-require": "^3.0.3",
     "nyc": "^14.1.1",

yarn.lock

@@ -3991,6 +3991,11 @@ mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@^0.5.3, mkdirp@~0.5.0, mkdirp@~0.5.1:
   dependencies:
     minimist "^1.2.5"
 
+mkdirp@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-3.0.1.tgz#e44e4c5607fb279c168241713cc6e0fea9adcb50"
+  integrity sha512-+NsyUUAZDmo6YVHzL/stxSu3t9YS1iljliy3BSDrXJ/dkn1KYdmtZODGGjLcc9XLgVVpH4KshHB8XmZgMhaBXg==
+
 mocha@^6.1.4:
   version "6.1.4"
   resolved "https://registry.npmjs.org/mocha/-/mocha-6.1.4.tgz"