Bump postcss from 8.5.18 to 8.5.26

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.18 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@8.5.18...8.5.26)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.25
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -46,7 +46,7 @@
         "cheerio": "^1.2.0",
         "dotenv": "^17.4.2",
         "lodash": "^4.18.1",
-        "postcss": "^8.5.18",
+        "postcss": "^8.5.26",
         "tailwindcss": "^4.3.2",
         "tsx": "^4.23.0",
         "typescript": "^5.9.3",