Update dependency posthog-js to ^1.284.0

Author: renovate[bot]

package.json

@@ -70,7 +70,7 @@
     "next": "16.0.1",
     "next-themes": "^0.4.6",
     "postgres": "^3.4.7",
-    "posthog-js": "^1.282.0",
+    "posthog-js": "^1.284.0",
     "posthog-node": "^5.10.4",
     "puppeteer-core": "24.26.1",
     "radix-ui": "^1.4.3",