Bump postcss from 8.5.10 to 8.5.23 (#283)

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.10 to 8.5.23.
- [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/8.5.10...8.5.23)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.23
  dependency-type: direct:development
...

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package.json

@@ -3,7 +3,7 @@
         "@tailwindcss/typography": "^0.5.9",
         "autoprefixer": "^10.4.14",
         "cssnano": "^6.0.1",
-        "postcss": "^8.5.10",
+        "postcss": "^8.5.23",
         "postcss-cli": "^10.1.0",
         "postcss-import": "^15.1.0",
         "tailwindcss": "^3.3.3"