Update dependency coverlet.collector to v8 (#103)

Author: jjonescz

test/KnowledgePicker.WordCloud.Tests/KnowledgePicker.WordCloud.Tests.csproj

@@ -16,7 +16,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="6.0.4">
+    <PackageReference Include="coverlet.collector" Version="8.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>