Try net8.0-android.

Author: jpobst

Directory.Build.props

@@ -6,7 +6,7 @@
     <RepositoryCommit>$(BUILD_SOURCEVERSION)</RepositoryCommit>
 
     <!-- Default TFM's we build for -->
-    <_DefaultTargetFrameworks>MonoAndroid12.0;net6.0-android;net7.0-android</_DefaultTargetFrameworks>
+    <_DefaultTargetFrameworks>net8.0-android</_DefaultTargetFrameworks>
 
     <!-- Enable DIM/SIM for Classic (defaults to true on .NET) -->
     <AndroidBoundInterfacesContainStaticAndDefaultInterfaceMethods>true</AndroidBoundInterfacesContainStaticAndDefaultInterfaceMethods>