Revert "Remove coverlet.collector"

This reverts commit fdb0e99.

Author: DaveTryon

test/Directory.Build.props

@@ -3,6 +3,10 @@
   <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)../'))"/>
 
   <ItemGroup Label="Package References">
+    <PackageReference Include="coverlet.collector">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="MSTest.TestAdapter"/>
     <PackageReference Include="MSTest.TestFramework"/>

test/Microsoft.Sbom.Targets.E2E.Tests/GenerateSbomE2ETests.cs

@@ -12,6 +12,6 @@ public class GenerateSbomE2ETests
     [TestMethod]
     public void PlaceholderTest()
     {
-        Assert.AreEqual(0, DateTime.Now.Year, "Placeholder test");
+        Assert.AreNotEqual(0, DateTime.Now.Year, "Placeholder test");
     }
 }