Update postcss 8.4.49 → 8.5.1 (minor) (tailwindlabs#15675)

Author: depfu[bot]

package.json

@@ -50,7 +50,7 @@
   "devDependencies": {
     "@playwright/test": "^1.49.1",
     "@types/node": "catalog:",
-    "postcss": "8.4.49",
+    "postcss": "8.5.1",
     "postcss-import": "^16.1.0",
     "prettier": "^3.4.2",
     "prettier-plugin-embed": "^0.4.15",