build(deps): bump @emotion/react from 11.8.2 to 11.9.0 in /docs

Bumps [@emotion/react](https://github.com/emotion-js/emotion) from 11.8.2 to 11.9.0.
- [Release notes](https://github.com/emotion-js/emotion/releases)
- [Changelog](https://github.com/emotion-js/emotion/blob/main/CHANGELOG.md)
- [Commits](https://github.com/emotion-js/emotion/compare/@emotion/[email protected]...@emotion/[email protected])

---
updated-dependencies:
- dependency-name: "@emotion/react"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/package-lock.json

@@ -6,7 +6,7 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
-    "@emotion/react": "^11.8.2",
+    "@emotion/react": "^11.9.0",
     "@emotion/styled": "^11.8.1",
     "@mdx-js/mdx": "^1.6.22",
     "@mdx-js/react": "^1.6.16",