Juan Alday

Removed used of deprecated forced_unwind

1

*Issue number of the reported bug or feature request: #157* **Describe your changes** It replaces the (removed) used of boost::coroutine2::detail::forced_unwind in a catch with boost::context **Testing performed** Just a basic...

Since boost 1.74, boost::coroutine2::detail::forced_unwind [no longer exists](https://github.com/boostorg/coroutine2/commit/6523d3180078cbb56af1c5eee927e161dcc304a1) . Since this is already mentioned in [quantum itself](https://github.com/bloomberg/quantum/blob/09990a191515822933e194cb828ad3243a66ea00/quantum/quantum_traits.h#L51) this is just an omission. It is also mentioned as an issue in https://github.com/boostorg/coroutine2/issues/23...