Merge pull request #1801 from AtCoder-NoviSteps/dependabot/npm_and_yarn/autoprefixer-10.4.21

build(deps): Bump autoprefixer from 10.4.20 to 10.4.21

Author: KATO-Hiro

package.json

@@ -79,7 +79,7 @@
     "@testing-library/svelte": "5.2.7",
     "@types/jest": "29.5.14",
     "@types/node": "22.13.10",
-    "autoprefixer": "10.4.20",
+    "autoprefixer": "10.4.21",
     "debug": "4.4.0",
     "embla-carousel-autoplay": "8.5.2",
     "embla-carousel-svelte": "8.5.2",