Update coverlet.integration.tests.csproj

Author: Bertk

test/coverlet.integration.tests/coverlet.integration.tests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.1" />
     <PackageReference Include="Moq" Version="4.20.70" />
     <PackageReference Include="NuGet.Packaging" Version="6.6.2" />
-    <PackageReference Include="xunit.v3" Version="0.6.0-pre.7" />
+    <PackageReference Include="xunit.v3" Version="0.6.0-pre.15" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0-pre.49">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>