build(deps): bump Microsoft.SourceLink.GitHub from 1.1.1 to 8.0.0

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] <[email protected]>

Directory.Packages.props

@@ -26,7 +26,7 @@
         <PackageVersion Include="Microsoft.Extensions.Http" Version="7.0.0" />
         <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.1" />
         <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-        <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="1.1.1" />
+        <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
         <PackageVersion Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.10.48" />
         <PackageVersion Include="MinVer" Version="4.3.0" />
         <PackageVersion Include="Mono.Posix.NETStandard" Version="1.0.0" Condition="'$(TargetFramework)' == 'net6.0'"/>