Hello,
Xamarin support has ended on May 1, 2024 for all Xamarin SDKs, and the latest supported Xcode version is 15.2. See Xamarin official support policy | .NET (microsoft.com)
It's recommended that you try to upgrade Xamarin projects to .NET MAUI, see the Upgrade from Xamarin to .NET & .NET MAUI
Please try using Xcode15.2 to build your app. Since you are using the azupre devops pipeline, you can create a new thread at https://developercommunity.visualstudio.com/AzureDevOps and get further help.
Best Regards,
Wenyan Zhang
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