[main] Update dependencies from dotnet/xharness (#20450)

This pull request updates the following dependencies

## From https://github.com/dotnet/xharness

- **Subscription**: 601bc5e1-1cae-44b5-cf5f-08db9342aa2f
- **Build**: 20240408.1
- **Date Produced**: April 8, 2024 3:04:52 PM UTC
- **Commit**: 50b43ece7daf9f8a88ac16a95a4f8647a4c71c4b
- **Branch**: refs/heads/main

- **Updates**:
  - **Microsoft.DotNet.XHarness.iOS.Shared**: [from 9.0.0-prerelease.24203.1 to 9.0.0-prerelease.24208.1][1]

[1]: 28af9496b0...50b43ece7d

eng/Version.Details.xml

@@ -78,9 +78,9 @@
       <Uri>https://github.com/dotnet/templating</Uri>
       <Sha />
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XHarness.iOS.Shared" Version="9.0.0-prerelease.24203.1">
+    <Dependency Name="Microsoft.DotNet.XHarness.iOS.Shared" Version="9.0.0-prerelease.24208.1">
       <Uri>https://github.com/dotnet/xharness</Uri>
-      <Sha>28af9496b0e260f7e66ec549b39f1410ee9743d1</Sha>
+      <Sha>50b43ece7daf9f8a88ac16a95a4f8647a4c71c4b</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

eng/Versions.props

@@ -11,7 +11,7 @@
     <MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>8.0.0</MicrosoftNETRuntimeMonoTargetsSdkPackageVersion>
     <MicrosoftTemplateEngineTasksVersion>7.0.100-alpha.1.21601.1</MicrosoftTemplateEngineTasksVersion>
     <MicrosoftDotNetCecilPackageVersion>0.11.4-alpha.23509.2</MicrosoftDotNetCecilPackageVersion>
-    <MicrosoftDotNetXHarnessiOSSharedPackageVersion>9.0.0-prerelease.24203.1</MicrosoftDotNetXHarnessiOSSharedPackageVersion>
+    <MicrosoftDotNetXHarnessiOSSharedPackageVersion>9.0.0-prerelease.24208.1</MicrosoftDotNetXHarnessiOSSharedPackageVersion>
     <!-- Manually updated versions -->
     <Emscriptennet7WorkloadVersion>$(MicrosoftNETWorkloadEmscriptenCurrentManifest80100Version)</Emscriptennet7WorkloadVersion>
     <EmscriptenWorkloadVersion>$(MicrosoftNETWorkloadEmscriptenCurrentManifest80100Version)</EmscriptenWorkloadVersion>