chore(deps): update dependency posthog-js to v1.280.1

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

bun.lock

@@ -39,7 +39,7 @@
     "gray-matter": "4.0.3",
     "lucide-react": "0.546.0",
     "next": "15.5.6",
-    "posthog-js": "1.279.3",
+    "posthog-js": "1.280.1",
     "posthog-node": "5.10.3",
     "prettier": "3.6.2",
     "react": "19.2.0",