CI Builds failing due to SSL Errors

[jamescrosswell]

We've been seeing these for a while now but they're getting more and more frequent... to the point that it's difficult to get any PRs to pass (having to retry multiple jobs, multiple times to get one that works).

We're getting SSL Errors when running dotnet restore and/or when trying to install the Android dependencies:

Determining projects to restore...
  Restored /Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj (in 2.35 sec).
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error : Failed to download Xamarin Repository manifest from https://aka.ms/AndroidManifestFeed/d17-12. System.AggregateException: One or more errors occurred. (The SSL connection could not be established, see inner exception.) [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :  ---> System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception. [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :  ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid because of errors in the certificate chain: RevocationStatusUnknown [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :    at System.Net.Security.SslStream.SendAuthResetSignal(ReadOnlySpan`1 alert, ExceptionDispatchInfo exception) [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :    at System.Net.Security.SslStream.CompleteHandshake(SslAuthenticationOptions sslAuthenticationOptions) [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :    at System.Net.Security.SslStream.ForceAuthenticationAsync[TIOAdapter](Boolean receiveFirst, Byte[] reAuthenticationData, CancellationToken cancellationToken) [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :    at System.Net.Http.ConnectHelper.EstablishSslConnectionAsync(SslClientAuthenticationOptions sslOptions, HttpRequestMessage request, Boolean async, Stream stream, CancellationToken cancellationToken) [/Users/runner/work/sentry-dotnet/sentry-dotnet/integration-test/maui-app/maui-app.csproj::TargetFramework=net8.0-android34.0]
/Users/runner/.dotnet/packs/Microsoft.Android.Sdk.Darwin/34.0.145/tools/Xamarin.Installer.Common.targets(12,3): error :    --- End of inner exception stack trace ---

I asked on the dotnetevolution/android channel and the MAUI maintainers are seeing something very similar.

Not yet sure what's causing it. Johnathan Peppers suggested this StackOverflow post might be related:

• https://stackoverflow.com/a/73845147