Bump @types/fs-extra from 5.1.0 to 8.1.0 (mui#1687)

Bumps [@types/fs-extra](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/fs-extra) from 5.1.0 to 8.1.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/fs-extra)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

lib/package.json

@@ -81,7 +81,7 @@
     "@material-ui/icons": "^4.9.1",
     "@types/enzyme": "^3.10.5",
     "@types/enzyme-adapter-react-16": "^1.0.3",
-    "@types/fs-extra": "^5.0.4",
+    "@types/fs-extra": "^8.1.0",
     "@types/jest": "^25.1.4",
     "@types/luxon": "^1.11.0",
     "@types/prop-types": "^15.5.8",

yarn.lock

@@ -2016,10 +2016,10 @@
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
   integrity sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==
 
-"@types/fs-extra@^5.0.4":
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-5.1.0.tgz#2a325ef97901504a3828718c390d34b8426a10a1"
-  integrity sha512-AInn5+UBFIK9FK5xc9yP5e3TQSPNNgjHByqYcj9g5elVBnDQcQL7PlO1CIRy2gWlbwK7UPYqi7vRvFA44dCmYQ==
+"@types/fs-extra@^8.1.0":
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/@types/fs-extra/-/fs-extra-8.1.0.tgz#1114834b53c3914806cd03b3304b37b3bd221a4d"
+  integrity sha512-UoOfVEzAUpeSPmjm7h1uk5MH6KZma2z2O7a75onTGjnNvAvMVrPzPL/vBbT65iIGHWj6rokwfmYcmxmlSf2uwg==
   dependencies:
     "@types/node" "*"