Update dependency autoprefixer to v10.4.21 (#1415)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -29,7 +29,7 @@
     "@babel/preset-env": "7.26.9",
     "@babel/preset-react": "7.26.3",
     "@babel/runtime": "7.26.9",
-    "autoprefixer": "10.4.20",
+    "autoprefixer": "10.4.21",
     "@babel/eslint-parser": "7.26.8",
     "babel-loader": "10.0.0",
     "core-js": "3.41.0",