Merge pull request #1180 from dotnet/dependabot/nuget/Ix.NET/Source/coverlet.collector-1.2.1

Author: dependabot-preview[bot]

Ix.NET/Source/Directory.build.props

@@ -32,7 +32,7 @@
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsTestProject)' == 'true'">
-    <PackageReference Include="coverlet.collector" Version="1.2.0" />
+    <PackageReference Include="coverlet.collector" Version="1.2.1" />
   </ItemGroup>