chore(deps): update dependency anyio to ~=4.8.0

[red-hat-konflux]

This PR contains the following updates:

Package	Type	Update	Change
anyio (changelog)	dependency-groups	minor	~=4.7.0 -> ~=4.8.0

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Release Notes

agronholm/anyio (anyio)

v4.8.0

Compare Source

• Added experimental support for running functions in subinterpreters on Python 3.13 and later
• Added support for the copy(), copy_into(), move() and move_into() methods in anyio.Path, available in Python 3.14
• Changed TaskGroup on asyncio to always spawn tasks non-eagerly, even if using a task factory created via asyncio.create_eager_task_factory(), to preserve expected Trio-like task scheduling semantics (PR by @​agronholm and @​graingert)
• Configure SO_RCVBUF, SO_SNDBUF and TCP_NODELAY on the selector thread waker socket pair (this should improve the performance of wait_readable() and wait_writable() when using the ProactorEventLoop) (#​836; PR by @​graingert)
• Fixed AssertionError when using nest-asyncio (#​840)
• Fixed return type annotation of various context managers' __exit__ method (#​847; PR by @​Enegg)

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