deps(frontend): bump prettier from 3.8.4 to 3.9.4 in /frontend (#520)

Bumps [prettier](https://github.com/prettier/prettier) from 3.8.4 to 3.9.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.8.4...3.9.4)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.9.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package.json

@@ -130,7 +130,7 @@
     "jsdom": "^29.1.1",
     "msw": "^2.14.6",
     "postcss": "8.5.16",
-    "prettier": "^3.0.3",
+    "prettier": "^3.9.4",
     "process": "^0.11.10",
     "rollup-plugin-visualizer": "^5.9.0",
     "sharp": "^0.34.0",

frontend/yarn.lock

@@ -5180,10 +5180,10 @@ prettier-linter-helpers@^1.0.1:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^3.0.3:
-  version "3.8.4"
-  resolved "https://registry.npmjs.org/prettier/-/prettier-3.8.4.tgz"
-  integrity sha512-N2MylSdi48+5N/6S5j+maeHbUSIzzZ5uOcX5Hm4QpV8Dkb1HFjfAKTKX6yNPJQD9AhcT3ifHNB66tWTTJDi11Q==
+prettier@^3.9.4:
+  version "3.9.4"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.9.4.tgz#a9c477cf1614376bd1f6bbc593d8c0d414bcec87"
+  integrity sha512-yWG/o/4oJfo036EKAfK6ACAoDOfHeRHx4tuxkfBZiauURiaSmYwlpOr5LQqKtIkRD2z1PLteme2WoxEnj4tHTg==
 
 pretty-format@^27.0.2:
   version "27.5.1"