bump(neon): 9695a225 → 58b84dfb (#2600)

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

.claude-plugin/marketplace.json

@@ -1759,7 +1759,7 @@
         "url": "https://github.com/neondatabase/agent-skills.git",
         "path": "plugins/neon-postgres",
         "ref": "main",
-        "sha": "9695a225d56ea55569a8b3a0b7294fb01c23b4ff"
+        "sha": "58b84dfb0815cca6dbb2f40bfdb23ddf934d2b5f"
       },
       "homepage": "https://github.com/neondatabase/agent-skills/tree/main/plugins/neon-postgres"
     },