chore(deps-dev): bump postcss from 8.5.6 to 8.5.7 in /modules/web

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.7.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.7)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.7
  dependency-type: direct:development
...

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

Author: dependabot[bot]

modules/web/packages/ui/package.json

@@ -73,7 +73,7 @@
     "concurrently": "^8.2.2",
     "eslint": "^8.57.1",
     "json": "^11.0.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.7",
     "postcss-loader": "^8.2.0",
     "postcss-scss": "^4.0.9",
     "postcss-selector-parser": "^6.1.2",