Use update timeout value in ec2_instance_state if greater than hard-coded instanceStopTimeout or instanceStartTimeout

[redartera]

Description

The update timeout isn't used when starting/stopping an EC2 instance, instead the hard-coded instanceStopTimeout and instanceStartTimeout are used. This PR uses the update timeout value if greater than either one of constant values. This is useful when dealing with large EC2 instances (e.g. p3dn.24xlarge) that take a very long time to start/stop.

[github-actions]

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[github-actions]

Welcome @redartera 👋

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