Disconnect serverConnection in finally block (#769)

Wrap Server creation and BuildContent call in a try/finally so serverConnection.Disconnect() is always invoked. This ensures the SQL Server connection is closed even if BuildContent throws, preventing potential connection leaks.

Author: SimonCropp

src/Verify.SqlServer/SchemaValidation/SqlScriptBuilder.cs

@@ -35,9 +35,15 @@ public string BuildContent(SqlConnection connection)
         {
             ConnectionString = connection.ConnectionString,
         };
-        var server = new Server(serverConnection);
-
-        return BuildContent(server, builder);
+        try
+        {
+            var server = new Server(serverConnection);
+            return BuildContent(server, builder);
+        }
+        finally
+        {
+            serverConnection.Disconnect();
+        }
     }
 
     string BuildContent(Server server, SqlConnectionStringBuilder builder)