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](https://github.com/dotnet/sourcelink/commits)

---
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>

src/ApprovalTests/ApprovalTests.csproj

@@ -18,7 +18,7 @@
     <PackageReference Include="Publicize.Fody" Version="1.8.0" PrivateAssets="All" />
     <PackageReference Include="Virtuosity.Fody" Version="3.1.1" PrivateAssets="All" />
     <PackageReference Include="TextCopy" Version="6.2.1" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
     <ProjectReference Include="..\ApprovalUtilities\ApprovalUtilities.csproj" />
     <Content Include="build\ApprovalTests.props" PackagePath="build\ApprovalTests.props" />
     <Content Include="buildMultiTargeting\ApprovalTests.props" PackagePath="buildMultiTargeting\ApprovalTests.props" />

src/ApprovalUtilities/ApprovalUtilities.csproj

@@ -14,6 +14,6 @@
     <PackageReference Include="System.Management" Version="6.0.2" />
     <PackageReference Include="Virtuosity.Fody" Version="3.1.1" PrivateAssets="All" />
     <PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
   </ItemGroup>
 </Project>