Update dependency LibGit2Sharp to v0.27.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
LibGit2Sharp	nuget	minor	0.26.2 -> 0.27.2

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Release Notes

libgit2/libgit2sharp (LibGit2Sharp)

v0.27.2

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Changes

• This release includes libgit2 v1.6.4.

Fixes

• Can't access GIT config (Repository.Config) since v0.27.0 #​2031

v0.27.1

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Fixes

• AssemblyVersion of v0.27.0 is 0.0.0.0, which is lower than the AssemblyVersion of the v0.26.x releases. #​2030

v0.27.0: LibGit2Sharp v0.27.0

Changes

• LibGit2Sharp now targets .NET Framework 4.7.2 and .NET 6.
• This release includes libgit2 v1.6.3.
• Changes to the native binaries let LibGit2Sharp work on all .NET 6 supported OS versions and architectures.
• GlobalSetings.NativeLibraryPath used to automatically append architecture to the path when running on .NET Framework. This behavior has been removed to make it consistent. #​1918

Additions

• Add support for adding and clearing multi-valued configuration #​1720
• added lines and deleted lines in content changes #​1790
• Set / get supported extensions #​1908
• Simplify dealing with missing git objects #​1909
• Throw NotFoundException if trees are missing when computing diff #​1936

Fixes

• Adjust GitStatusOptions to match structure of native libgit2 #​1884
• Update git_worktree_add_options struct to include ref pointer #​1890
• Fix git_remote_connect not throwing on non-zero result #​1913
• Fix incorrect information in exceptions #​1919
• Checkout branch looks to remote tracking branches as fallback #​1820
• Fixed calling into native libgit2 on osx-arm64 #​1955

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