Bump @types/react-transition-group from 2.9.2 to 4.2.0 (#149)

Bumps [@types/react-transition-group](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-transition-group) from 2.9.2 to 4.2.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-transition-group)

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

packages/material-ui/package.json

@@ -42,7 +42,7 @@
     "@material-ui/system": "^4.3.0",
     "@material-ui/types": "^4.1.1",
     "@material-ui/utils": "^4.1.0",
-    "@types/react-transition-group": "^2.9.2",
+    "@types/react-transition-group": "^4.2.0",
     "clsx": "^1.0.2",
     "convert-css-length": "^2.0.1",
     "deepmerge": "^4.0.0",

yarn.lock

@@ -2164,10 +2164,10 @@
   dependencies:
     "@types/react" "*"
 
-"@types/react-transition-group@*", "@types/react-transition-group@^2.9.2":
-  version "2.9.2"
-  resolved "https://registry.yarnpkg.com/@types/react-transition-group/-/react-transition-group-2.9.2.tgz#c48cf2a11977c8b4ff539a1c91d259eaa627028d"
-  integrity sha512-5Fv2DQNO+GpdPZcxp2x/OQG/H19A01WlmpjVD9cKvVFmoVLOZ9LvBgSWG6pSXIU4og5fgbvGPaCV5+VGkWAEHA==
+"@types/react-transition-group@*", "@types/react-transition-group@^4.2.0":
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/@types/react-transition-group/-/react-transition-group-4.2.0.tgz#86ddb509ce3de27341c7cb7797abb99b1c4676bf"
+  integrity sha512-8KkpFRwqS9U1dtVVw1kt/MmWgLmbd5iK5TgqsaeC7fAm74J4j/HiBiRC8eETvwjGGju48RAwyZ3l5iv1H1x93Q==
   dependencies:
     "@types/react" "*"