Bump vite from 5.4.20 to 5.4.21 in /frontend (#2722)

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) from 5.4.20 to 5.4.21.
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v5.4.21/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v5.4.21/packages/vite)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 5.4.21
  dependency-type: direct:development
...

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

frontend/package.json

@@ -55,7 +55,7 @@
     "eslint-plugin-import": "^2.23.3",
     "eslint-plugin-vue": "^9.19.2",
     "sass": "^1.34.0",
-    "vite": "^5.4.20",
+    "vite": "^5.4.21",
     "vue-eslint-parser": "^9.3.2",
     "vue-template-compiler": "^2.6.12"
   },

frontend/yarn.lock

@@ -4111,10 +4111,10 @@ verror@1.10.0:
     core-util-is "1.0.2"
     extsprintf "^1.2.0"
 
-vite@^5.4.20:
+vite@^5.4.21:
-  version "5.4.20"
+  version "5.4.21"
-  resolved "https://registry.yarnpkg.com/vite/-/vite-5.4.20.tgz#3267a5e03f21212f44edfd72758138e8fcecd76a"
+  resolved "https://registry.yarnpkg.com/vite/-/vite-5.4.21.tgz#84a4f7c5d860b071676d39ba513c0d598fdc7027"
-  integrity sha512-j3lYzGC3P+B5Yfy/pfKNgVEg4+UtcIJcVRt2cDjIOmhLourAqPqf8P7acgxeiSgUB7E3p2P8/3gNIgDLpwzs4g==
+  integrity sha512-o5a9xKjbtuhY6Bi5S3+HvbRERmouabWbyUcpXXUA1u+GNUKoROi9byOJ8M0nHbHYHkYICiMlqxkg1KkYmm25Sw==
   dependencies:
     esbuild "^0.21.3"
     postcss "^8.4.43"