chore(deps-dev): bump postcss in /react-postgres-fullstack-template

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.26.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.6...8.5.26)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.26
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

react-postgres-fullstack-template/package-lock.json

@@ -41,7 +41,7 @@
 		"eslint-plugin-react-refresh": "0.4.24",
 		"globals": "16.5.0",
 		"hono": "4.11.1",
-		"postcss": "8.5.6",
+		"postcss": "8.5.26",
 		"postgres": "3.4.7",
 		"vite": "^7.0.0",
 		"wrangler": "4.88.0"