chore(deps-dev): bump postcss from 8.4.45 to 8.4.47 (#319)

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:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -26,7 +26,7 @@
     "@fullhuman/postcss-purgecss": "^6.0.0",
     "@tailwindcss/typography": "^0.4.1",
     "autoprefixer": "^10.4.20",
-    "postcss": "^8.4.45",
+    "postcss": "^8.4.47",
     "postcss-cli": "^11.0.0",
     "postcss-import": "^16.1.0",
     "prettier": "^2.2.1",