Merge pull request #581 from microsoft/dependabot/npm_and_yarn/postcss-8.5.6

Bump postcss from 8.5.5 to 8.5.6

Author: jeffwilcox

package-lock.json

@@ -21,7 +21,7 @@
     "@types/react-dom": "^19",
     "eslint": "9.29.0",
     "eslint-config-next": "15.3.3",
-    "postcss": "8.5.5",
+    "postcss": "8.5.6",
     "sass": "1.89.2",
     "typescript": "5.8.3"
   },