chore(deps-dev): bump postcss from 8.5.4 to 8.5.9 (#35)

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.4 to 8.5.9.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.4...8.5.9)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "eslint-plugin-react-hooks": "^7.0.0",
     "jest": "^29.5.0",
     "jest-environment-jsdom": "^30.3.0",
-    "postcss": "^8.5.4",
+    "postcss": "^8.5.9",
     "tailwindcss": "^3.4.1",
     "test-exclude": "^7.0.1",
     "ts-jest": "^29.4.9",