Merge pull request #12 from randlee/dependabot/nuget/tests/RoslynDiff.Benchmarks/BenchmarkDotNet-0.15.8

Bump BenchmarkDotNet from 0.14.0 to 0.15.8

Author: randlee

tests/RoslynDiff.Benchmarks/RoslynDiff.Benchmarks.csproj

@@ -15,7 +15,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
   </ItemGroup>
 
 </Project>