Bump Microsoft.SourceLink.GitHub from 1.1.1 to 8.0.0

---
updated-dependencies:
- dependency-name: Microsoft.SourceLink.GitHub
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

src/TimeZoneNames/TimeZoneNames.csproj

@@ -28,7 +28,7 @@
 
   <ItemGroup>
     <PackageReference Include="TimeZoneConverter" Version="7.2.0" />
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All"/>
   </ItemGroup>
 
   <ItemGroup Condition="('$(TargetFramework)' == 'netstandard2.0') Or ('$(TargetFramework)' == 'netstandard2.1') Or ('$(TargetFramework)' == 'net462')">