chore(deps): bump highlight.js from 9.15.10 to 9.18.5 in /website (#709)

Bumps [highlight.js](https://github.com/highlightjs/highlight.js) from 9.15.10 to 9.18.5.
- [Release notes](https://github.com/highlightjs/highlight.js/releases)
- [Changelog](https://github.com/highlightjs/highlight.js/blob/9.18.5/CHANGES.md)
- [Commits](highlightjs/highlight.js@9.15.10...9.18.5)

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

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

Author: dependabot[bot]

website/yarn.lock

@@ -3155,9 +3155,9 @@ hex-color-regex@^1.1.0:
   integrity sha512-l9sfDFsuqtOqKDsQdqrMRk0U85RZc0RtOR9yPI7mRVOa4FsR/BVnZ0shmQRM96Ji99kYZP/7hn1cedc1+ApsTQ==
 
 highlight.js@^9.15.8:
-  version "9.15.10"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.15.10.tgz#7b18ed75c90348c045eef9ed08ca1319a2219ad2"
-  integrity sha512-RoV7OkQm0T3os3Dd2VHLNMoaoDVx77Wygln3n9l5YV172XonWG6rgQD3XnF/BuFFZw9A0TJgmMSO8FEWQgvcXw==
+  version "9.18.5"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.18.5.tgz#d18a359867f378c138d6819edfc2a8acd5f29825"
+  integrity sha512-a5bFyofd/BHCX52/8i8uJkjr9DYwXIPnM/plwI6W7ezItLGqzt7X2G2nXuYSfsIJdkwwj/g9DG1LkcGJI/dDoA==
 
 hosted-git-info@^2.1.4:
   version "2.8.4"