Bump postcss from 8.4.45 to 8.4.47

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.45 to 8.4.47.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.45...8.4.47)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -18,7 +18,7 @@
   "homepage": "https://github.com/OpenFunction/website#readme",
   "dependencies": {
     "docsy": "^0.10.0",
-    "postcss": "^8.4.45"
+    "postcss": "^8.4.47"
   },
   "devDependencies": {
     "autoprefixer": "^10.4.20",