Bump coverlet.collector from 6.0.4 to 8.0.0 (#117)

Author: dependabot[bot]

src/GrpcFileTransfer.Test/GrpcFileTransfer.Test.csproj

@@ -21,7 +21,7 @@
             <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>