Update dependency BenchmarkDotNet to 0.15.8 (#193)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

TruePath.Benchmarks/TruePath.Benchmarks.csproj

@@ -15,7 +15,7 @@ SPDX-License-Identifier: MIT
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="BenchmarkDotNet" Version="0.15.6" />
+      <PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
     </ItemGroup>
 
 </Project>