Dependency(deps-dev): Bump postcss in /report-viewer

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.45 to 8.4.47.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.45...8.4.47)

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

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

report-viewer/package.json

@@ -53,7 +53,7 @@
     "jsdom": "^25.0.0",
     "lint-staged": "^15.2.10",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.4.45",
+    "postcss": "^8.4.47",
     "prettier": "^3.3.3",
     "prettier-plugin-tailwindcss": "^0.6.6",
     "tailwindcss": "^3.4.10",