[release/9.0-staging] Update dependencies from dotnet/icu (#114762)

* Update dependencies from https://github.com/dotnet/icu build 20250415.1

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 9.0.0-rtm.25212.1 -> To Version 9.0.0-rtm.25215.1

* Update dependencies from https://github.com/dotnet/icu build 20250419.1

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 9.0.0-rtm.25212.1 -> To Version 9.0.0-rtm.25219.1

* Update dependencies from https://github.com/dotnet/icu build 20250423.1

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 9.0.0-rtm.25212.1 -> To Version 9.0.0-rtm.25223.1

* Update dependencies from https://github.com/dotnet/icu build 20250428.1

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 9.0.0-rtm.25212.1 -> To Version 9.0.0-rtm.25228.1

* Update dependencies from https://github.com/dotnet/icu build 2025050.2

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 9.0.0-rtm.25212.1 -> To Version 9.0.0-rtm.25255.2

---------

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -1,8 +1,8 @@
 <Dependencies>
   <ProductDependencies>
-    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="9.0.0-rtm.25212.1">
+    <Dependency Name="Microsoft.NETCore.Runtime.ICU.Transport" Version="9.0.0-rtm.25255.2">
       <Uri>https://github.com/dotnet/icu</Uri>
-      <Sha>855a75965f9dcfbd835dbd7000a95060d0adabaa</Sha>
+      <Sha>b89f0483290ff54b7efd43bfb04f16c4d0c0a9ca</Sha>
     </Dependency>
     <Dependency Name="System.Net.MsQuic.Transport" Version="9.0.0-alpha.1.24167.3">
       <Uri>https://github.com/dotnet/msquic</Uri>

eng/Versions.props

@@ -219,7 +219,7 @@
     <!-- ILCompiler -->
     <MicrosoftDotNetILCompilerVersion>9.0.0-rtm.24511.16</MicrosoftDotNetILCompilerVersion>
     <!-- ICU -->
-    <MicrosoftNETCoreRuntimeICUTransportVersion>9.0.0-rtm.25212.1</MicrosoftNETCoreRuntimeICUTransportVersion>
+    <MicrosoftNETCoreRuntimeICUTransportVersion>9.0.0-rtm.25255.2</MicrosoftNETCoreRuntimeICUTransportVersion>
     <MicrosoftNETCoreRuntimeICUTransportVersion>9.0.0-rtm.24466.4</MicrosoftNETCoreRuntimeICUTransportVersion>
     <!-- MsQuic -->
     <MicrosoftNativeQuicMsQuicSchannelVersion>2.4.8</MicrosoftNativeQuicMsQuicSchannelVersion>