Bump react from 16.12.0 to 16.13.0 in /website (#7679)

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 16.12.0 to 16.13.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v16.13.0/packages/react)

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

website/package.json

@@ -15,7 +15,7 @@
     "lodash": "4.17.15",
     "lz-string": "1.4.4",
     "prop-types": "15.7.2",
-    "react": "16.12.0",
+    "react": "16.13.0",
     "react-dom": "16.13.0"
   },
   "devDependencies": {

website/yarn.lock

@@ -6413,10 +6413,10 @@ react-is@^16.8.1:
   resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.10.1.tgz#0612786bf19df406502d935494f0450b40b8294f"
   integrity sha512-BXUMf9sIOPXXZWqr7+c5SeOKJykyVr2u0UDzEf4LNGc6taGkQe1A9DFD07umCIXz45RLr9oAAwZbAJ0Pkknfaw==
 
-react@16.12.0, react@^16.2.0, react@^16.8.4:
-  version "16.12.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.12.0.tgz#0c0a9c6a142429e3614834d5a778e18aa78a0b83"
-  integrity sha512-fglqy3k5E+81pA8s+7K0/T3DBCF0ZDOher1elBFzF7O6arXJgzyu/FW+COxFvAWXJoJN9KIZbT2LXlukwphYTA==
+react@16.13.0, react@^16.2.0, react@^16.8.4:
+  version "16.13.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.13.0.tgz#d046eabcdf64e457bbeed1e792e235e1b9934cf7"
+  integrity sha512-TSavZz2iSLkq5/oiE7gnFzmURKZMltmi193rm5HEoUDAXpzT9Kzw6oNZnGoai/4+fUnm7FqS5dwgUL34TujcWQ==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"