Merge pull request #1640 from dotnet/dependabot/nuget/Rx.NET/Source/Microsoft.SourceLink.GitHub-1.1.1

Author: clairernovotny

Rx.NET/Source/Directory.build.props

@@ -27,7 +27,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
     <PackageReference Include="Nerdbank.GitVersioning" Version="3.4.244" PrivateAssets="all" />
   </ItemGroup>