build(deps-dev): bump postcss from 8.4.49 to 8.5.8

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.49 to 8.5.8.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.49...8.5.8)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -54,7 +54,7 @@
     "markdownlint-cli": "0.41.0",
     "npm-check-updates": "19.0.0",
     "npm-package-json-lint": "8.0.0",
-    "postcss": "8.4.49",
+    "postcss": "8.5.9",
     "prettier": "2.8.8",
     "rimraf": "5.0.10",
     "stylelint": "17.4.0",

packages/build-utils-css/package.json

@@ -18,7 +18,7 @@
   },
   "devDependencies": {
     "cssnano": "7.0.7",
-    "postcss": "8.4.49",
+    "postcss": "8.5.9",
     "sass": "1.69.7"
   }
 }

packages/component-library-css/package.json

@@ -132,7 +132,7 @@
     "colorjs.io": "0.6.1",
     "http-server": "14.1.1",
     "playwright": "1.56.1",
-    "postcss": "8.4.49",
+    "postcss": "8.5.9",
     "postcss-discard-duplicates": "7.0.2",
     "postcss-logical": "7.0.1",
     "rimraf": "6.0.1",