chore(deps-dev): bump postcss from 8.4.24 to 8.4.26 in /ui

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.24 to 8.4.26.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.24...8.4.26)

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

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

ui/package.json

@@ -76,7 +76,7 @@
     "eslint-plugin-react-hooks": "^4.6.0",
     "jest": "^29.6.1",
     "package-changed": "^3.0.0",
-    "postcss": "^8.4.24",
+    "postcss": "^8.4.26",
     "prettier": "^2.8.8",
     "prettier-plugin-organize-imports": "^3.2.2",
     "prettier-plugin-tailwindcss": "^0.3.0",