Update dependency autoprefixer to v10.4.21

Author: renovate[bot]

package.json

@@ -56,7 +56,7 @@
     "webpack": "^5.82.0"
   },
   "devDependencies": {
-    "autoprefixer": "10.4.14",
+    "autoprefixer": "10.4.21",
     "@tailwindcss/forms": "^0.5.3",
     "@tailwindcss/typography": "^0.5.9",
     "eslint": "8.57.0",