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

Bumps [postcss](/~https://github.com/postcss/postcss) from 8.4.49 to 8.5.1.
- [Release notes](/~https://github.com/postcss/postcss/releases)
- [Changelog](/~https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.49...8.5.1)

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

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

report-viewer/package.json

@@ -55,7 +55,7 @@
     "jsdom": "^26.0.0",
     "lint-staged": "^15.4.1",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.4.45",
+    "postcss": "^8.5.1",
     "prettier": "^3.4.2",
     "prettier-plugin-tailwindcss": "^0.6.9",
     "tailwindcss": "^3.4.16",