build(deps-dev): bump @babel/plugin-proposal-optional-chaining (#14135)

Bumps [@babel/plugin-proposal-optional-chaining](https://github.com/babel/babel/tree/HEAD/packages/babel-plugin-proposal-optional-chaining) from 7.18.6 to 7.18.9.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.18.9/packages/babel-plugin-proposal-optional-chaining)

---
updated-dependencies:
- dependency-name: "@babel/plugin-proposal-optional-chaining"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

website/client/package.json

@@ -65,6 +65,6 @@
     "webpack": "^4.46.0"
   },
   "devDependencies": {
-    "@babel/plugin-proposal-optional-chaining": "^7.18.6"
+    "@babel/plugin-proposal-optional-chaining": "^7.18.9"
   }
 }