chore: Bump autoprefixer from 10.4.16 to 10.4.20 in /apps/web-admin

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.16 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@10.4.16...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]>

apps/web-admin/package.json

@@ -21,7 +21,7 @@
     "@mui/material": "^5.15.9",
     "@mui/x-data-grid": "^6.19.3",
     "@next/font": "^14.2.13",
-    "autoprefixer": "10.4.16",
+    "autoprefixer": "10.4.20",
     "@radix-ui/react-slot": "^1.1.0",
     "axios": "^1.5.1",
     "canvas": "^2.11.2",
@@ -55,7 +55,7 @@
   "devDependencies": {
     "@types/node": "22.5.0",
     "@types/react": "18.3.4",
-    "autoprefixer": "10.4.16",
+    "autoprefixer": "10.4.20",
     "postcss": "8.4.31",
     "tailwindcss": "^3.4.12",
     "typescript": "^5.0.4"