Removes the old implementation of sourcelink and uses the newer one present in the .net SDK

[nickfloyd]

We discovered that we were using the old implementation of source link as well as using the new implementation in the csproj files.

The old source link test is causing CI to break (due to a dev cert issue). Instead of using the hammer of dotnet dev-certs clean and trust, we will just remove the old references.

Relates to:
#2648
#2665

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Behavior

Before the change?

• CI is currently broken and the sourcelink step is no longer linking symbols for debugging

After the change?

• CI works and symbols are source linked for local debugging

Other information

• Symbols and debugging will need to be validated in the produced and published nuget package

Related info:

• https://learn.microsoft.com/en-us/aspnet/core/security/enforcing-ssl?view=aspnetcore-6.0&tabs=visual-studio#trust-the-aspnet-core-https-development-certificate-on-windows-and-macos
• https://github.com/ctaggart/SourceLink
• https://github.com/dotnet/sourcelink
• Using sourcelink in .NET projects

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Additional info

Pull request checklist

• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Added the appropriate label for the given change

Does this introduce a breaking change?

Please see our docs on breaking changes to help!

• Yes (Please add the Type: Breaking change label)
• No

If Yes, what's the impact:

• N/A

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[kfcampbell]

Thanks for making this change!

[nickfloyd]