Bump mdast-util-to-hast in /src/chat-copilot/webapp

Bumps [mdast-util-to-hast](https://github.com/syntax-tree/mdast-util-to-hast) from 13.0.2 to 13.2.1.
- [Release notes](https://github.com/syntax-tree/mdast-util-to-hast/releases)
- [Commits](https://github.com/syntax-tree/mdast-util-to-hast/compare/13.0.2...13.2.1)

---
updated-dependencies:
- dependency-name: mdast-util-to-hast
  dependency-version: 13.2.1
  dependency-type: indirect
...

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

src/chat-copilot/webapp/yarn.lock

@@ -7883,9 +7883,9 @@ mdast-util-phrasing@^4.0.0:
     unist-util-is "^6.0.0"
 
 mdast-util-to-hast@^13.0.0:
-  version "13.0.2"
-  resolved "https://registry.yarnpkg.com/mdast-util-to-hast/-/mdast-util-to-hast-13.0.2.tgz#74c0a9f014bb2340cae6118f6fccd75467792be7"
-  integrity sha512-U5I+500EOOw9e3ZrclN3Is3fRpw8c19SMyNZlZ2IS+7vLsNzb2Om11VpIVOR+/0137GhZsFEF6YiKD5+0Hr2Og==
+  version "13.2.1"
+  resolved "https://registry.yarnpkg.com/mdast-util-to-hast/-/mdast-util-to-hast-13.2.1.tgz#d7ff84ca499a57e2c060ae67548ad950e689a053"
+  integrity sha512-cctsq2wp5vTsLIcaymblUriiTcZd0CwWtCbLvrOzYCDZoWyMNV8sZ7krj09FSnsiJi3WVsHLM4k6Dq/yaPyCXA==
   dependencies:
     "@types/hast" "^3.0.0"
     "@types/mdast" "^4.0.0"
@@ -7895,6 +7895,7 @@ mdast-util-to-hast@^13.0.0:
     trim-lines "^3.0.0"
     unist-util-position "^5.0.0"
     unist-util-visit "^5.0.0"
+    vfile "^6.0.0"
 
 mdast-util-to-markdown@^2.0.0:
   version "2.1.0"