[main] Update dependencies from microsoft/testfx (#49033)

Author: v-wuzhai

eng/Version.Details.xml

@@ -546,13 +546,13 @@
       <Uri>https://github.com/dotnet/arcade-services</Uri>
       <Sha>7126d7cb6f801691b0dfcc4e8357471f8dc750a9</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Testing.Platform" Version="1.8.0-preview.25262.2">
+    <Dependency Name="Microsoft.Testing.Platform" Version="1.8.0-preview.25266.2">
       <Uri>https://github.com/microsoft/testfx</Uri>
-      <Sha>9a016c071b017918233cbf99e1d21144fb9ce5f3</Sha>
+      <Sha>7f47c26b682dc8b937b8cd2375fa1b976e39e6a1</Sha>
     </Dependency>
-    <Dependency Name="MSTest" Version="3.10.0-preview.25262.2">
+    <Dependency Name="MSTest" Version="3.10.0-preview.25266.2">
       <Uri>https://github.com/microsoft/testfx</Uri>
-      <Sha>9a016c071b017918233cbf99e1d21144fb9ce5f3</Sha>
+      <Sha>7f47c26b682dc8b937b8cd2375fa1b976e39e6a1</Sha>
     </Dependency>
     <Dependency Name="Microsoft.Extensions.Configuration.Ini" Version="10.0.0-preview.5.25265.101">
       <Uri>https://github.com/dotnet/dotnet</Uri>

eng/Versions.props

@@ -30,7 +30,7 @@
     <UsingToolVSSDK>true</UsingToolVSSDK>
     <FlagNetStandard1XDependencies Condition="'$(DotNetBuildSourceOnly)' == 'true'">true</FlagNetStandard1XDependencies>
     <!-- This property is only used in the dotnet test integration tests. -->
-    <MicrosoftTestingPlatformVersion>1.8.0-preview.25262.2</MicrosoftTestingPlatformVersion>
+    <MicrosoftTestingPlatformVersion>1.8.0-preview.25266.2</MicrosoftTestingPlatformVersion>
   </PropertyGroup>
   <PropertyGroup Label="Servicing version information">
     <VersionFeature21>30</VersionFeature21>
@@ -322,7 +322,7 @@
     <AwesomeAssertionsVersion>8.0.2</AwesomeAssertionsVersion>
     <AwesomeAssertionsJsonVersion>8.0.0</AwesomeAssertionsJsonVersion>
     <MoqPackageVersion>4.18.4</MoqPackageVersion>
-    <MSTestVersion>3.10.0-preview.25262.2</MSTestVersion>
+    <MSTestVersion>3.10.0-preview.25266.2</MSTestVersion>
     <XunitCombinatorialVersion>1.3.2</XunitCombinatorialVersion>
     <MicrosoftDotNetInstallerWindowsSecurityTestDataPackageVersion>8.0.0-beta.23607.1</MicrosoftDotNetInstallerWindowsSecurityTestDataPackageVersion>
   </PropertyGroup>