Merge pull request #1571 from dotnet/dependabot/nuget/Ix.NET/Source/Nerdbank.GitVersioning-3.4.220

Ix.NET/Source/Directory.Build.props

@@ -26,7 +26,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All"/>
-    <PackageReference Include="Nerdbank.GitVersioning" Version="3.4.216" PrivateAssets="all" />
+    <PackageReference Include="Nerdbank.GitVersioning" Version="3.4.220" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsTestProject)' == 'true'">