Bump Microsoft.SourceLink.GitHub in /src/NHapi.SourceGeneration

Bumps [Microsoft.SourceLink.GitHub](https://github.com/dotnet/sourcelink) from 1.1.1 to 8.0.0.
- [Release notes](https://github.com/dotnet/sourcelink/releases)
- [Commits](dotnet/sourcelink@1.1.1...8.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.SourceLink.GitHub
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/Directory.Build.targets

@@ -30,6 +30,6 @@
 
   <!-- Build Time Tools (Includes commit sha in AssemblyInfo etc)-->
   <ItemGroup Condition=" '$(IsPackable)' == 'true' And '$(IncludeCommonPackageInfo)' == 'true' And '$(Configuration)' == 'Release' ">
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" IsImplicitlyDefined="true" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" IsImplicitlyDefined="true" />
   </ItemGroup>
 </Project>