Bump LibGit2Sharp from 0.30.0 to 0.31.0

Bumps [LibGit2Sharp](https://github.com/libgit2/libgit2sharp) from 0.30.0 to 0.31.0.
- [Release notes](https://github.com/libgit2/libgit2sharp/releases)
- [Changelog](https://github.com/libgit2/libgit2sharp/blob/master/CHANGES.md)
- [Commits](libgit2/libgit2sharp@0.30.0...0.31.0)

---
updated-dependencies:
- dependency-name: LibGit2Sharp
  dependency-version: 0.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Tests/Tests.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="DotNetConfig" Version="1.2.0" />
     <PackageReference Include="DotNetConfig.Configuration" Version="1.2.0" />
     <PackageReference Include="Humanizer.Core" Version="2.14.1" />
-    <PackageReference Include="LibGit2Sharp" Version="0.30.0" />
+    <PackageReference Include="LibGit2Sharp" Version="0.31.0" />
     <PackageReference Include="Meziantou.Extensions.Logging.Xunit" Version="1.0.11" />
     <PackageReference Include="Microsoft.Build.Tasks.Git" Version="8.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />