Updated dependencies and now compatible from netstandard2.0 to net8.0

[energywave]

• Updated all NuGet dependencies
• reverded the base target from netstandard2.1 (introduced in ver 1.2.7) to netstandard2.0 as this keeps it compatible with the still widely used Net Framework 4.8.
• Added net4.8 to Tests targets and adapted appsettings.json code to work on every platform (used newtonsoft.json to read it instead of the AspNetCore configuration).
• In DistanceMatrixTests.ShouldReplaceUriViaOnUriCreated test implemented the placeholder replacement without using the UriBuilder as it was buggy in .net 4.8
  All tests passed on all targets.
  I'm already using in one of my .net 4.8 WinForms project and it's working flawlessy.

[maximn]

@energywave thanks for the PR!
The tests are failing, can you have a look? I'll also try to have a look tmrw. Seems like something with your change of the API KEY.

The way it works, there is an environment variable named GOOGLE_API_KEY with the key that's used in the tests.

[energywave]

Hello, yes I've seen it was trying to get the key from app settings.json and, if not available there, it was getting from the environment variable.
I've changed only the appsettings part, leaving as it was the environment part.
In fact on my PC I've used the key in appsettings as I've seen you excluded that file in .gitignore (nice!) and in my visual studio all tests in all the targets are completing flawlessly.
I'll try to figure out what is happening tomorrow, I hope to find time.
Thank you for the useful library! ☺️

[maximn]

Another suggestion is to split this PR to smaller chunks, so it'll be easier to merge it

[energywave]

Sorry that I could not work on that sooner. When I submitted my PR I was using the appsettings to set my google apy key so I had the doubt that setting the environment variable did not work. So I tested it yesterday and... it just works correctly!
So, if you download my PR and you test it in Visual Studio on Windows it works just as intended and all tests in all three targets are passed.
There must be something in github actions but I never used them... Can you please check that they works correctly? As I suspect that even without my PR they'll not pass...
Specifically the previouse code was:

protected string ApiKey => Configuration.GetValue<string>(ApiKeyEnvironmentVariable) 
?? Environment.GetEnvironmentVariable(ApiKeyEnvironmentVariable) 
?? throw new InvalidOperationException($"API key is not configured. Please set the {ApiKeyEnvironmentVariable} environment variable.");

And now is:

protected string ApiKey => AppSettings.Load()?.GoogleApiKey
?? Environment.GetEnvironmentVariable(ApiKeyEnvironmentVariable) 
?? throw new InvalidOperationException($"API key is not configured. Please set the {ApiKeyEnvironmentVariable} environment variable.");

As you see the environment should work. The only reason because it would not pick up the environment variable is if it finds an appsettings and it contains the GOOGLE_APY_KEY variable.

[energywave]

Furthermore... I think we have to update the nuget.yml adding other targets accordint to .net standard 2.0 but, again, I never used github workflow, so maybe it's better that you fix it the proper way.

[maximn]

I think that something with the jobs for PRs isn't set right and you're just not getting the key. I'll check that.

[maximn]

Published v 1.3.3

[energywave]

Wonderful, thank you! I've updated on of my softwares where I was referencing my PR in the solution, by now referencing the newly published package from NuGet and it works flawlessy in .net framework 4.8.
Maybe when you have time check the workflow on PR for the future integrations :)
And thank you for your library!

[maximn]

Yeah, I checked the github actions documents. Looks like I need to clone your PR to a local branch and then run it there. I'll do that for next time.