ci: bump postcss from 8.4.47 to 8.4.49

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.47 to 8.4.49.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.47...8.4.49)

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

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

package.json

@@ -71,7 +71,7 @@
     "less": "^4.2.0",
     "less-loader": "^7.3.0",
     "lint-staged": "^15.2.10",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.49",
     "prettier": "^3.2.5",
     "webpack-dev-server": "^4.15.2"
   },