Bump @docusaurus/preset-classic from 3.7.0 to 3.9.1

Bumps [@docusaurus/preset-classic](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus-preset-classic) from 3.7.0 to 3.9.1.
- [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/v3.9.1/packages/docusaurus-preset-classic)

---
updated-dependencies:
- dependency-name: "@docusaurus/preset-classic"
  dependency-version: 3.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -40,7 +40,7 @@
     "@docusaurus/plugin-google-tag-manager": "^3.7.0",
     "@docusaurus/plugin-ideal-image": "^3.7.0",
     "@docusaurus/plugin-vercel-analytics": "^3.7.0",
-    "@docusaurus/preset-classic": "3.7.0",
+    "@docusaurus/preset-classic": "3.9.1",
     "@docusaurus/theme-mermaid": "3.7.0",
     "@docusaurus/theme-search-algolia": "^3.7.0",
     "@mdx-js/react": "^3.1.0",