Bump BenchmarkDotNet.Diagnostics.Windows from 0.15.7 to 0.15.8 (CommunityToolkit#2977)

Author: dependabot[bot]

src/CommunityToolkit.Maui.SourceGenerators.Benchmarks/CommunityToolkit.Maui.SourceGenerators.Benchmarks.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.15.7" />
+    <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.15.8" />
 
   </ItemGroup>