chore(deps): bump @docusaurus/core from 2.4.1 to 2.4.3 in /site

Bumps [@docusaurus/core](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus) from 2.4.1 to 2.4.3.
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v2.4.3/packages/docusaurus)

---
updated-dependencies:
- dependency-name: "@docusaurus/core"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

site/package.json

@@ -18,7 +18,7 @@
     "lint": "eslint --cache --cache-location ./node_modules/.cache/eslint ."
   },
   "dependencies": {
-    "@docusaurus/core": "^2.4.1",
+    "@docusaurus/core": "^2.4.3",
     "@docusaurus/preset-classic": "^2.2.0",
     "@mdx-js/react": "^1.6.22",
     "clsx": "^1.2.1",