build(deps): bump undici from 5.23.0 to 5.28.4 in /webapp-next

Bumps [undici](https://github.com/nodejs/undici) from 5.23.0 to 5.28.4.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.23.0...v5.28.4)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

webapp-next/yarn.lock

@@ -1045,6 +1045,11 @@
   resolved "https://registry.yarnpkg.com/@eslint/js/-/js-8.57.0.tgz#a5417ae8427873f1dd08b70b3574b453e67b5f7f"
   integrity sha512-Ys+3g2TaW7gADOJzPt83SJtCDhMjndcDMFVQ/Tj9iA1BfJzFKD9mAUXT3OenpuPHbI6P/myECxRJrofUsDx/5g==
 
+"@fastify/busboy@^2.0.0":
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/@fastify/busboy/-/busboy-2.1.1.tgz#b9da6a878a371829a0502c9b6c1c143ef6663f4d"
+  integrity sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==
+
 "@fontsource/inter@^5.0.0":
   version "5.0.18"
   resolved "https://registry.yarnpkg.com/@fontsource/inter/-/inter-5.0.18.tgz#eaddac790ee74b70932030f37ebaa9fc76decbd8"
@@ -1780,7 +1785,7 @@ bundle-name@^3.0.0:
   dependencies:
     run-applescript "^5.0.0"
 
-[email protected], busboy@^1.6.0:
+[email protected]:
   version "1.6.0"
   resolved "https://registry.npmjs.org/busboy/-/busboy-1.6.0.tgz"
   integrity sha512-8SFQbg/0hQ9xy3UNTB0YEnsNBbWfhf7RtnzpL7TkBiTBRfrQ9Fxcnz7VJsleJpyp6rVLvXiuORqjlHi5q+PYuA==
@@ -4270,11 +4275,11 @@ undici-types@~5.26.4:
   integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
 
 undici@^5.22.1:
-  version "5.23.0"
-  resolved "https://registry.npmjs.org/undici/-/undici-5.23.0.tgz"
-  integrity sha512-1D7w+fvRsqlQ9GscLBwcAJinqcZGHUKjbOmXdlE/v8BvEGXjeWAax+341q44EuTcHXXnfyKNbKRq4Lg7OzhMmg==
+  version "5.28.4"
+  resolved "https://registry.yarnpkg.com/undici/-/undici-5.28.4.tgz#6b280408edb6a1a604a9b20340f45b422e373068"
+  integrity sha512-72RFADWFqKmUb2hmmvNODKL3p9hcB6Gt2DOQMis1SEBaV6a4MH8soBvzg+95CYhCKPFedut2JY9bMfrDl9D23g==
   dependencies:
-    busboy "^1.6.0"
+    "@fastify/busboy" "^2.0.0"
 
 untildify@^4.0.0:
   version "4.0.0"