Update dependency postcss to v8.4.27

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "eslint-plugin-prettier": "4.2.1",
     "eslint-plugin-solid": "0.12.1",
     "lefthook": "1.4.6",
-    "postcss": "8.4.26",
+    "postcss": "8.4.27",
     "prettier": "2.8.8",
     "prettier-plugin-astro": "0.11.0",
     "typescript": "5.1.6",