[Snyk] Upgrade posthog-js from 1.223.5 to 1.266.3 (#395)

Co-authored-by: snyk-bot <[email protected]>

Author: vroldanbet

package.json

@@ -33,7 +33,7 @@
     "next-sitemap": "^4.2.3",
     "nextra": "^4.6.0",
     "nextra-theme-docs": "^4.6.0",
-    "posthog-js": "^1.223.5",
+    "posthog-js": "^1.266.3",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-youtube": "^10.1.0",