Bump autoprefixer from 10.4.15 to 10.4.20

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.15 to 10.4.20.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](postcss/autoprefixer@10.4.15...10.4.20)

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

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

package.json

@@ -19,7 +19,7 @@
     "@types/node": "20.8.7",
     "@types/react": "18.2.21",
     "@types/react-dom": "18.2.7",
-    "autoprefixer": "10.4.15",
+    "autoprefixer": "10.4.20",
     "classnames": "^2.5.1",
     "encoding": "^0.1.13",
     "eslint": "8.51.0",