chore(deps-dev): bump postcss in /remix-starter-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: 8.5.25
  dependency-type: direct:development
...

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

Author: dependabot[bot]

remix-starter-template/package-lock.json

@@ -33,7 +33,7 @@
 		"eslint-plugin-jsx-a11y": "6.10.2",
 		"eslint-plugin-react": "7.37.5",
 		"eslint-plugin-react-hooks": "7.0.1",
-		"postcss": "8.5.6",
+		"postcss": "8.5.26",
 		"tailwindcss": "^3.4.0",
 		"typescript": "5.9.3",
 		"vite": "5.4.14",