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] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -37,7 +37,7 @@
     "autoprefixer": "^10.4.20",
     "cross-env": "^7.0.3",
     "hugo-extended": "0.138.0",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.49",
     "postcss-cli": "^11.0.0"
   }
 }