chore(deps): update dependency benchmarkdotnet to 0.15.8

Author: renovate[bot]

src/SmartSql.Test.Performance/SmartSql.Test.Performance.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.13.8" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.15.8" />
     <PackageReference Include="Dapper" Version="1.60.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore" Version="2.2.3" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="2.2.3" />