[build] Bump Octokit: 7.0.0->9.0.0

Author: AndreyAkinshin

build/BenchmarkDotNet.Build/BenchmarkDotNet.Build.csproj

@@ -10,6 +10,6 @@
     <PackageReference Include="Cake.FileHelpers" Version="6.1.3" />
     <PackageReference Include="Cake.Git" Version="3.0.0" />
     <PackageReference Include="Docfx.App" Version="2.74.0" />
-    <PackageReference Include="Octokit" Version="7.0.0" />
+    <PackageReference Include="Octokit" Version="9.0.0" />
   </ItemGroup>
 </Project>