Bump System.Threading.Tasks.Extensions from 4.5.4 to 4.6.0

Bumps [System.Threading.Tasks.Extensions](https://github.com/dotnet/maintenance-packages) from 4.5.4 to 4.6.0.
- [Release notes](https://github.com/dotnet/maintenance-packages/releases)
- [Commits](https://github.com/dotnet/maintenance-packages/commits)

---
updated-dependencies:
- dependency-name: System.Threading.Tasks.Extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

src/GuiException/tests/nunit.uiexception.tests.csproj

@@ -28,7 +28,7 @@
         <PackageReference Include="NSubstitute" Version="5.3.0" />
 	    <PackageReference Include="NUnit" Version="4.1.0" />
 	    <PackageReference Include="NUnitLite" Version="4.1.0" />
-	    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+	    <PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" />
     </ItemGroup>
 
 </Project>

src/TestCentric/tests/TestCentric.Gui.Tests.csproj

@@ -36,7 +36,7 @@
         <PackageReference Include="NUnit.Extension.NUnitV2Driver" Version="3.8.0" />
         <PackageReference Include="NUnit.Extension.NUnitV2ResultWriter" Version="3.6.0" />
         <PackageReference Include="NUnit.Extension.VSProjectLoader" Version="3.8.0" />
-		<PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+		<PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" />
 	</ItemGroup>
 
 </Project>

src/TestModel/tests/TestCentric.Gui.Model.Tests.csproj

@@ -26,7 +26,7 @@
 		<PackageReference Include="TestCentric.Engine.Api" Version="2.0.0-beta6" />
 		<PackageReference Include="TestCentric.Extensibility" Version="3.0.2" />
 		<PackageReference Include="TestCentric.InternalTrace" Version="1.2.1" />
-		<PackageReference Include="System.Threading.Tasks.Extensions" Version="4.5.4" />
+		<PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" />
 	</ItemGroup>
 
 </Project>