fix(deps): update dependency rehype-slug to v6

Author: renovate[bot]

package-lock.json

@@ -79,7 +79,7 @@
     "react-router-dom": "6.30.0",
     "react-syntax-highlighter": "15.6.1",
     "rehype-raw": "^6.1.1",
-    "rehype-slug": "^5.0.1",
+    "rehype-slug": "^6.0.0",
     "remark-gfm": "3.0.1",
     "remark-unwrap-images": "^3.0.1",
     "swagger-ui-react": "^4.14.0"