Bump postcss from 8.4.31 to 8.4.39

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.31 to 8.4.39.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.31...8.4.39)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -54,7 +54,7 @@
     "autoprefixer": "^10.4.7",
     "eslint": "8.22.0",
     "eslint-config-next": "^13.5.3",
-    "postcss": "^8.4.14",
+    "postcss": "^8.4.39",
     "prettier": "^2.7.1",
     "prettier-plugin-tailwindcss": "^0.1.13",
     "prisma": "^5.12.1",