upgrade to LibGit2Sharp 0.27.2

Author: rgl

UseLibgit2sharp.csproj

@@ -4,16 +4,6 @@
     <TargetFramework>net6.0</TargetFramework>
   </PropertyGroup>
   <ItemGroup>
-    <!--
-      To use this in Ubuntu 20.04 we need a preview release of LibGit2Sharp.
-
-      Release versions of libgit2sharp still use libssl1.0.0 which was dropped from Ubuntu.
-
-      See https://github.com/libgit2/libgit2sharp/issues/1747 # for working in ubuntu 20.04.
-      See https://github.com/libgit2/libgit2sharp/pull/1905   # for libgit2 1.1.1.
-      See https://github.com/libgit2/libgit2sharp/pull/1907   # for libgit2 1.2.0. # TODO this is not yet released in a nuget package.
-      See 
-    -->
-    <PackageReference Include="LibGit2Sharp" Version="0.27.0-preview-0182" />
+    <PackageReference Include="LibGit2Sharp" Version="0.27.2" />
   </ItemGroup>
 </Project>