use ubuntu-latest-4-cores on heavy workloads

[bruno-garcia]

Looking at the large runner here, looks like we need to use the right name

The goal is not to add ubuntu-latest-4-cores everywhere, but add to things that run on Linux that are slow to run

#skip-changelog

[bruno-garcia]

-             ServerName: TheMachineName,
+             ServerName: TheUserName,

The server name changes based on the runner somehow?

That's defined here:

https://github.com/getsentry/sentry-dotnet/blob/edd0be43dc5d11f81dea765fca6aafdbad37a6f1/test/Sentry.Testing/VerifyExtensions.cs#L12C14-L12C30

https://github.com/VerifyTests/Verify/blob/752a4c27e876bdb4586c6d90cf36e509f833145b/src/Verify/Serialization/Scrubbers/Scrubbers.cs#L13

But we do ignore it here:

https://github.com/getsentry/sentry-dotnet/blob/edd0be43dc5d11f81dea765fca6aafdbad37a6f1/test/Sentry.Serilog.Tests/IntegrationTests.verify.cs#L61C14-L61C41

[bruno-garcia]

Raised an issue with Verify:

• ScrubMachineName seems to get mixed up with ScrubUserName VerifyTests/Verify#1319