chore(deps-dev): bump the postcss group with 2 updates

Bumps the postcss group with 2 updates: [postcss](https://github.com/postcss/postcss) and [postcss-preset-env](https://github.com/csstools/postcss-plugins/tree/HEAD/plugin-packs/postcss-preset-env).


Updates `postcss` from 8.5.8 to 8.5.15
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.8...8.5.15)

Updates `postcss-preset-env` from 11.2.0 to 11.3.0
- [Changelog](https://github.com/csstools/postcss-plugins/blob/main/plugin-packs/postcss-preset-env/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-plugins/commits/HEAD/plugin-packs/postcss-preset-env)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: postcss
- dependency-name: postcss-preset-env
  dependency-version: 11.3.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: postcss
...

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

Author: dependabot[bot]

app/package.json

@@ -100,10 +100,10 @@
         "happy-dom": "^20.0.0",
         "jiti": "^2.6.1",
         "openapi-typescript": "6.5.5",
-        "postcss": "^8.5.8",
+        "postcss": "^8.5.15",
         "postcss-nested": "^7.0.2",
         "postcss-normalize": "^13.0.1",
-        "postcss-preset-env": "^11.0.0",
+        "postcss-preset-env": "^11.3.0",
         "rollup-plugin-visualizer": "^7.0.0",
         "stylelint": "^17.0.0",
         "stylelint-config-concentric": "^2.0.2",

packages/ui/package.json

@@ -88,10 +88,10 @@
         "eslint-plugin-react-refresh": "^0.4.26",
         "eslint-plugin-simple-import-sort": "^12.1.1",
         "glob": "^13.0.0",
-        "postcss": "^8.5.8",
+        "postcss": "^8.5.15",
         "postcss-nested": "^7.0.2",
         "postcss-normalize": "^13.0.1",
-        "postcss-preset-env": "^11.0.0",
+        "postcss-preset-env": "^11.3.0",
         "react-focus-on": "^3.9.1",
         "sanitize-html": "^2.11.0",
         "stylelint": "^17.0.0",