chore(deps): update dependency posthog-js to v1.318.1

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

Author: renovate[bot]

bun.lock

@@ -43,7 +43,7 @@
     "mermaid": "11.12.2",
     "next": "16.1.1",
     "next-validate-link": "1.6.3",
-    "posthog-js": "1.312.0",
+    "posthog-js": "1.318.1",
     "react": "19.2.3",
     "react-dom": "19.2.3",
     "react-medium-image-zoom": "5.4.0",