chore(deps): update dependency memfs to v3 (master) (#2333)

Author: renovate[bot]

package-lock.json

@@ -99,7 +99,7 @@
     "less-loader": "^5.0.0",
     "lint-staged": "^9.4.3",
     "marked": "^0.7.0",
-    "memfs": "^2.16.1",
+    "memfs": "^3.0.1",
     "npm-run-all": "^4.1.5",
     "prettier": "^1.19.1",
     "puppeteer": "^1.20.0",