Bump postcss from 8.5.8 to 8.5.10

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.8 to 8.5.10.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.5.8...8.5.10)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.10
  dependency-type: direct:development
...

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

package.json

@@ -164,7 +164,7 @@
         "esbuild-node-externals": "1.20.1",
         "eslint": "10.0.3",
         "eslint-config-next": "16.1.7",
-        "postcss": "8.5.8",
+        "postcss": "8.5.10",
         "prettier": "3.8.1",
         "react-email": "5.2.10",
         "tailwindcss": "4.2.2",