[fix][client-cpp] modern boost cancel method without args

[daeho-ro]

Fixes #560

Motivation

Build failed with modern boost 1.78+, so fix method signature for it.

Modifications

.cancel has no signature for boost 1.78+

Verifying this change

• Make sure that the change passes the CI checks.

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This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Documentation

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  (Please explain why) : quite simple change for external library not pulsar.

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[BewareMyPower]

I think you can use cancelTimer in lib/AsioTimer.h instead

[BewareMyPower]

It's interesting that the main branch depends on Boost.Asio 1.90 or Asio 1.32, but CI all passed. Maybe it's because ASIO_NO_DEPRECATED is not defined by default?

You can try building the project via vcpkg

[daeho-ro]

I am not sure this is a correct usage, but anyway tried.