Chore: Update autoprefixer to v10.4.21 [skip netlify]

Author: renovate[bot]

package-lock.json

@@ -66,7 +66,7 @@
     "@typescript-eslint/parser": "5.30.3",
     "@vitejs/plugin-vue": "2.3.3",
     "@vue/test-utils": "2.0.0",
-    "autoprefixer": "10.4.7",
+    "autoprefixer": "10.4.21",
     "eslint": "8.19.0",
     "eslint-config-prettier": "8.5.0",
     "eslint-plugin-vue": "9.1.1",