Fix test nuget packages.

Author: sipsorcery

test/SIPSorceryMedia.Abstractions.UnitTest/SIPSorceryMedia.Abstractions.UnitTest.csproj

@@ -8,9 +8,9 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="9.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="System.Drawing.Common" Version="9.0.0" />
-    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
@@ -19,13 +19,14 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.0" />
+    <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.1" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.19" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\SIPSorceryMedia.Abstractions\SIPSorceryMedia.Abstractions.csproj" />
+    <ProjectReference Include="..\unit\SIPSorcery.UnitTests.csproj" />
   </ItemGroup>
 
   <ItemGroup>

test/unit/SIPSorcery.UnitTests.csproj

@@ -12,7 +12,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.4.0" />
     <PackageReference Include="Serilog.Extensions.Logging" Version="9.0.1" />
     <PackageReference Include="Serilog.Sinks.Console" Version="6.0.0" />
     <PackageReference Include="Serilog.Sinks.XUnit" Version="3.0.19" />