Update libgit2 to v0.27.1 (b0d9952)

Author: ethomson

LibGit2Sharp/LibGit2Sharp.csproj

@@ -32,7 +32,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="LibGit2Sharp.NativeBinaries" Version="[1.0.210]" PrivateAssets="none" />
+    <PackageReference Include="LibGit2Sharp.NativeBinaries" Version="[1.0.217]" PrivateAssets="none" />
     <PackageReference Include="Nerdbank.GitVersioning" Version="2.1.23" PrivateAssets="all" />
     <PackageReference Include="SourceLink.Create.GitHub" Version="2.8.0" PrivateAssets="all" />
     <DotNetCliToolReference Include="dotnet-sourcelink-git" Version="2.8.0" />