Bump postcss from 8.4.49 to 8.5.1

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.49 to 8.5.1.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.49...8.5.1)

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

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

Author: dependabot[bot]

package-lock.json

@@ -4,7 +4,7 @@
     "elm-review": "^2.12.0",
     "elm-tailwind-modules": "^0.5.0",
     "elm-test": "^0.19.1-revision12",
-    "postcss": "^8.4.49",
+    "postcss": "^8.5.1",
     "tailwindcss": "^3.4.17"
   },
   "dependencies": {