Update to latest build agent software

Author: christophwille

.github/workflows/build-ilspy.yml

@@ -13,7 +13,7 @@ jobs:
   Build:
     permissions:
       packages: write  # for dotnet nuget push
-    runs-on: windows-2022
+    runs-on: windows-2025
     strategy:
       fail-fast: false
       matrix:

ILSpy.Installer/ILSpy.Installer.csproj

@@ -23,7 +23,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="WixSharp_wix4" Version="2.12.0" />
+    <PackageReference Include="WixSharp_wix4" Version="2.12.2" />
   </ItemGroup>
 
   <Target Name="PostBuild" AfterTargets="PostBuildEvent">