Bump Microsoft.SourceLink.GitHub

Bumps [Microsoft.SourceLink.GitHub](https://github.com/dotnet/sourcelink) from 1.0.0-beta-63127-02 to 1.0.0-beta2-19367-01.
- [Release notes](https://github.com/dotnet/sourcelink/releases)
- [Commits](https://github.com/dotnet/sourcelink/commits/1.0.0-beta2-19367-01)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Directory.build.props

@@ -51,7 +51,7 @@
   </PropertyGroup>
 
   <ItemGroup Condition=" $(IsPackable) ">
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta-63127-02" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-19367-01" PrivateAssets="All" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'Release' And '$(IsPackable)' ">