Update dependency autoprefixer to v10.4.15

Author: renovate[bot]

package.json

@@ -24,7 +24,7 @@
     "@unocss/preset-wind": "0.55.0",
     "astro-robots-txt": "0.5.0",
     "astro-seo": "0.7.5",
-    "autoprefixer": "10.4.14",
+    "autoprefixer": "10.4.15",
     "cspell": "6.31.3",
     "cssnano": "6.0.1",
     "cssnano-preset-advanced": "6.0.1",