Optimize the SQL DB query in Health Endpoint

Try `QueryExecutor ` to optimize the SQL DB query instead of
```
using (SqlConnection connection = new(connectionString))
{
try
{
SqlCommand command = new(query, connection);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
LogTrace("The health check query for datasource executed successfully.");
reader.Close();
}
catch (Exception ex)
{
LogTrace($"An exception occurred while executing the health check query: {ex.Message}");
errorMessage = ex.Message;
}
}
```