deps: postcss postcss-loader

Author: reggi

package-lock.json

@@ -55,6 +55,7 @@
     "github-slugger": "^2.0.0",
     "lodash.debounce": "4.0.8",
     "postcss": "^8.4.49",
+    "postcss-loader": "^8.1.1",
     "prism-react-renderer": "^2.3.1",
     "prismjs": "^1.29.0",
     "react": "^18.2.0",