Bump prettier from 3.8.3 to 3.9.4 (#1382)

Bumps [prettier](https://github.com/prettier/prettier) from 3.8.3 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@3.8.3...3.9.4)

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

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

Author: dependabot[bot]

package-lock.json

@@ -55,7 +55,7 @@
     "mocha": "11.7.6",
     "npm-run-all": "4.1.5",
     "playwright": "1.60.0",
-    "prettier": "3.8.3",
+    "prettier": "3.9.4",
     "sinon": "22.0.0",
     "stylelint": "17.12.0",
     "stylelint-config-standard": "40.0.0"