Try fixing the issue with libgit2sharp blocking newer .NET versions

The single-file build functionality in .NET 5 did not work well with earlier versions of libgit2sharp. Let's see if our build works with this version and .NET 5 or .NET 6.
For discussion of the errors we got when trying .NET 5 with earlier versions of libgit2sharp, see libgit2/libgit2sharp#1857 and libgit2/libgit2sharp.nativebinaries#111

Author: Viir

implement/elm-fullstack/elm-fullstack.csproj

@@ -24,7 +24,7 @@
   <ItemGroup>
     <PackageReference Include="FluffySpoon.AspNet.LetsEncrypt" Version="1.116.0" />
     <PackageReference Include="JavaScriptEngineSwitcher.V8" Version="3.12.4" />
-    <PackageReference Include="LibGit2Sharp" Version="0.27.0-preview-0096" />
+    <PackageReference Include="LibGit2Sharp" Version="0.27.0-preview-0116" />
     <PackageReference Include="McMaster.Extensions.CommandLineUtils" Version="3.1.0" />
     <PackageReference Include="Microsoft.ClearScript.V8.Native.linux-x64" Version="7.1.4" />
     <PackageReference Include="Microsoft.ClearScript.V8.Native.win-x64" Version="7.1.4" />