Update dependency Microsoft.NET.Sdk.Functions to v1.0.28 (reactjs#803)

Author: renovate[bot]

webhooks/React.Site.Hooks.csproj

@@ -3,7 +3,7 @@
     <TargetFramework>net461</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.27" />
+    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.28" />
     <PackageReference Include="Octokit" Version="0.32.0" />
   </ItemGroup>
   <ItemGroup>