Bump NetFabric.Assertive from 1.7.1 to 1.8.0

Bumps [NetFabric.Assertive](https://github.com/NetFabric/NetFabric.Assertive) from 1.7.1 to 1.8.0.
- [Release notes](https://github.com/NetFabric/NetFabric.Assertive/releases)
- [Commits](NetFabric/NetFabric.Assertive@1.7.1...1.8.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

NetFabric.Hyperlinq.UnitTests/NetFabric.Hyperlinq.UnitTests.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
-    <PackageReference Include="NetFabric.Assertive" Version="1.7.1" />
+    <PackageReference Include="NetFabric.Assertive" Version="1.8.0" />
     <PackageReference Include="morelinq" Version="3.3.2" />
     <PackageReference Include="System.Interactive" Version="4.0.0" />
     <PackageReference Include="xunit" Version="2.4.1" />