Update dependency Octokit to v0.48.0 (reactjs#1117)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

webhooks/React.Site.Hooks.csproj

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.36" />
-    <PackageReference Include="Octokit" Version="0.47.0" />
+    <PackageReference Include="Octokit" Version="0.48.0" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />