Update dependency BenchmarkDotNet to v0.13.8

Author: renovate[bot]

benchmarks/Pipeline/Pipeline.csproj

@@ -8,7 +8,7 @@
 
     <ItemGroup>
         <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
-        <PackageReference Include="BenchmarkDotNet" Version="0.13.7" />
+        <PackageReference Include="BenchmarkDotNet" Version="0.13.8" />
         <PackageReference Include="Nerdbank.Streams" Version="2.6.81" />
     </ItemGroup>