chore(deps-dev): bump postcss from 8.4.47 to 8.4.48 (#1006)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.47 to 8.4.48.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.47...8.4.48)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -90,7 +90,7 @@
     "npm-run-all": "^4.1.5",
     "pa11y-ci": "^3.1.0",
     "plugin-node-patternlab-inline-remote-assets": "^0.2.1",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.48",
     "postcss-cli": "^11.0.0",
     "postcss-focus": "^7.0.0",
     "postcss-list-style-safari-fix": "^1.0.0",