build(deps): bump LanguageExt.Core from 3.4.15 to 4.4.7

[dependabot]

Bumps LanguageExt.Core from 3.4.15 to 4.4.7.

Release notes

Sourced from LanguageExt.Core's releases.

Big fixes and minor improvements release

New:

• Support for IfFail in Try, TryOption, TryAsync, and TryOptionAsync - Thanks @​mark-pro 👍
• Update prelude for Arithmetic typeclass - Thanks @​benjstephenson 👍
• Improvements to the Effects samples

Bug fixes:

• Fix for EitherUnsafe MapLeft throws ResultIsNullException
• Fix for Stack overflow with MapT on T
• Fix for CancellationTokenSource not disposed

Breaking change: OptionAsync await + Producer.merge

This is a fixes release.

OptionAsync

I have brought forward a change to OptionAsync that I was saving for v5: the removal of the async-awaiter. You can't now await an OptionAsync. The resulting value wasn't clear, and honestly the async/await machinery is really quite shonky outside of using it for Tasks.

I have made the OptionAsync implementation aware of nullable references, and so you can now await the Value property instead:

    public Task<A?> Value

That will reproduce the same behaviour as before. You can still await the ToOption() method, which returns a Task<Option<A>>, if you want to do matching on the underlying option. Or call the various Match* methods.

This release fixes the following issues:

• louthy/language-ext#1159
• louthy/language-ext#1184

Producer.merge error handling

Producer merging was silently ignoring errors. They now exit and return the first error and shutdown other producers they were merged with. Merged producers also listen for cancellation correctly now.

Finally, you can only merge produces with a bound value of Unit. This is to stop the silent dropping of their return value as well as the need to provide a final (bound) value for merged producers, which doesn't really make sense. That also means the + operator can't work any more because it can't be defined for the Producer<..., A> type. So you must use Producer.merge.

This fixes an issue mentioned in: louthy/language-ext#1177

repeatM doesn't cause a stack-overflow

Certain elements of the Pipes capability of language-ext are direct ports from the Haskell Pipes library, which uses recursion everywhere. repeatM was causing a stack-overflow on usage, this is now fixed.

Example usage:

public static Effect<Runtime, Unit> effect =>
    Producer.repeatM(Time<Runtime>.nowUTC) | writeLine<DateTime>(); 
</tr></table> 

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[sdiachen]

@dependabot rebase

[dependabot]

Looks like this PR has been edited by someone other than Dependabot. That means Dependabot can't rebase it - sorry!

If you're happy for Dependabot to recreate it from scratch, overwriting any edits, you can request @dependabot recreate.

[sdiachen]

/azp run

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[dependabot]

A newer version of LanguageExt.Core exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.