bug: Query cancellation will fail likely

[moredure]

Since context is done at this point:

go-athena/conn.go

Line 100 in 60266f6

c.athena.StopQueryExecution(ctx, &athena.StopQueryExecutionInput{

It will fail

[moredure]

so some stopqueryexecution timeout should be provided to the driver to make it possible to stop execution running longer than expected.