feat: support .NET 8.0 | Timer no longer throws `ObjectDisposedException`#385

vbreuss merged 3 commits intomainTestably/Testably.Abstractions:mainfrom

topic/vb/net8.0-timer-objectdisposedexceptionTestably/Testably.Abstractions:topic/vb/net8.0-timer-objectdisposedexceptionCopy head branch name to clipboard