Bump prettier from 3.8.3 to 3.8.4

Bumps [prettier](https://github.com/prettier/prettier) from 3.8.3 to 3.8.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.8.3...3.8.4)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.8.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -8,7 +8,7 @@
     "eslint-plugin-prettier": "5.5.6",
     "globals": "^17.6.0",
     "jest": "30.4.2",
-    "prettier": "3.8.3",
+    "prettier": "3.8.4",
     "webpagetest": "github:HTTPArchive/WebPageTest.api-nodejs"
   },
   "engines": {