Use SDK 26100 in CommonCore project (microsoft#5570)

The last couple of builds have failed due to a missing SDK version
10.0.22621.0, presumably due to the agent images being updated to remove
this. The only project where we use this version is CommonCore,
everywhere else we use 26100 already. This PR updates CommonCore to use
the same SDK version as all the other projects.
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Author: florelis

src/AppInstallerCommonCore/AppInstallerCommonCore.vcxproj

@@ -9,7 +9,7 @@
     <ProjectGuid>{5890d6ed-7c3b-40f3-b436-b54f640d9e65}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>AppInstallerLoggingCore</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.22621.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.26100.0</WindowsTargetPlatformVersion>
     <WindowsTargetPlatformMinVersion>10.0.17763.0</WindowsTargetPlatformMinVersion>
     <WindowsSDKDesktopARM64Support>true</WindowsSDKDesktopARM64Support>
   </PropertyGroup>
@@ -500,4 +500,4 @@
     <Error Condition="!Exists('$(SolutionDir)\packages\Microsoft.Windows.CppWinRT.2.0.230706.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\packages\Microsoft.Windows.CppWinRT.2.0.230706.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
     <Error Condition="!Exists('$(SolutionDir)\packages\Microsoft.Windows.CppWinRT.2.0.230706.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\packages\Microsoft.Windows.CppWinRT.2.0.230706.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
   </Target>
-</Project>
+</Project>