feat: use new endpoint to get message status

[aliel]

• less expensive

[github-actions]

Summary:
The PR contains a small change to the URL endpoint in the get_message_status method. The original URL was /api/v0/messages/{item_hash}, which has been updated to /api/v0/messages/{item_hash}/status. This change is likely to be a simple typo fix or a minor adjustment to the API endpoint, and does not introduce any significant risks or changes to the existing logic.

Highlight:

-        async with self.http_session.get(f"/api/v0/messages/{item_hash}") as resp:
+        async with self.http_session.get(f"/api/v0/messages/{item_hash}/status") as resp:

This change involves a straightforward substitution of the URL path, which is unlikely to affect the functionality of the codebase in a significant way. The rest of the method remains unchanged, maintaining the existing behavior of the HTTP request.