fix(db): Remove trailing comma in migration journal JSON

The trailing comma after the last entry caused drizzle-kit migrate to fail
with a JSON parse error in CI.

Author: brandonkachen

packages/internal/src/db/migrations/meta/_journal.json

@@ -281,6 +281,6 @@
       "when": 1769482939158,
       "tag": "0039_quiet_franklin_storm",
       "breakpoints": true
-    },
+    }
   ]
 }