Bump react and react-dom (#170)

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) and [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom). These dependencies needed to be updated together.

Updates `react` from 16.14.0 to 17.0.1
- [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/v17.0.1/packages/react)

Updates `react-dom` from 16.14.0 to 17.0.1
- [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/v17.0.1/packages/react-dom)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -26,8 +26,8 @@
     "@docusaurus/core": "2.0.0-alpha.71",
     "@docusaurus/preset-classic": "2.0.0-alpha.71",
     "classnames": "^2.2.6",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1",
     "react-markdown": "^5.0.3",
     "react-table": "^7.6.3",
     "remark-emoji": "^2.1.0",