Updated github actions to remove deprecation warnings

[thomas-mullaly]

I noticed that there are deprecation warnings with some of the action workflows. Additionally, the action that's being used to publish the nuget packages is no longer maintained. This is a problem because that action uses the set-output command, which GitHub has deprecated and will be completely removing at the end of May.

These upgrades should clear warnings around a deprecated nodejs version and issuse with using set-output.

For the nuget package publishing, I haven't really been able to test the push command but I did try to replicate what the old action was doing to publish packages.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
Ardalis.Result.SampleWeb	62%	50%	33	➖
Ardalis.Result	32%	18%	64	❌
Ardalis.Result.AspNetCore	65%	70%	126	➖
Ardalis.Result.Sample.Core	25%	33%	50	❌
Ardalis.Result.FluentValidation	0%	0%	6	❌
Summary	47% (357 / 766)	56% (82 / 146)	279	❌

[ardalis]

Thanks!