bump(posthog): b2054334 → d7b81c43 (#3498)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.claude-plugin/marketplace.json

@@ -2222,7 +2222,7 @@
       "source": {
         "source": "url",
         "url": "https://github.com/PostHog/ai-plugin.git",
-        "sha": "b2054334354599d7cc2d02e7329a5066e44d9c4f"
+        "sha": "d7b81c43c34c177667014295193659ae37c0c2cb"
       },
       "homepage": "https://posthog.com/docs/model-context-protocol"
     },