zig-pkg update

asio update - chriskohlhoff/asio

Fixed the completion token adapters bind_allocator, bind_cancellation_slot
and bind_immediate_executor to not require a return_type type alias in
the adapted async_result specialisation.
Fixed a potental crash due to an object lifetime issue in the co_spawn
operation's cancellation support.
Enabled compiler-supported thread locals on more target platforms, using the
thread_local keyword if available.
Fixed the documentation of the per-operation cancellation behaviour for
experimental::co_composed to correctly state that terminal cancellation is
enabled by default.
Documented the per-operation cancellation behaviour of async_compose.
Added bind_immediate_executor to the Completion Token Adapters overview.
Added an example illustrating how to use an experimental channel for
mutual exclusion between cooperating asynchronous actors.
Added an example showing how to write a minimal completion executor.