chore(deps): update dependency postcss to v8.5.4 (#344)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
     "@types/react-dom": "18.3.7",
     "autoprefixer": "10.4.21",
     "parcel": "2.15.2",
-    "postcss": "8.5.3",
+    "postcss": "8.5.4",
     "process": "0.11.10",
     "typescript": "5.8.3"
   },