chore(deps-dev): bump postcss from 8.5.5 to 8.5.6 in the patch-dependencies group (#1180)

chore(deps-dev): bump postcss in the patch-dependencies group

Bumps the patch-dependencies group with 1 update: [postcss](https://github.com/postcss/postcss).


Updates `postcss` from 8.5.5 to 8.5.6
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.5...8.5.6)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: patch-dependencies
...

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Author: dependabot[bot]

package-lock.json

@@ -90,7 +90,7 @@
     "npm-run-all2": "8.0.4",
     "pa11y-ci": "^3.1.0",
     "plugin-node-patternlab-inline-remote-assets": "^0.2.1",
-    "postcss": "^8.5.5",
+    "postcss": "^8.5.6",
     "postcss-cli": "^11.0.1",
     "postcss-focus": "^7.0.0",
     "postcss-list-style-safari-fix": "^1.0.0",