Update dependency Soenneker.Tests.FixturedUnit to 4.0.2280 (#682)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

test/Soenneker.SemanticKernel.Pool.Gemini.Tests/Soenneker.SemanticKernel.Pool.Gemini.Tests.csproj

@@ -22,7 +22,7 @@
     </ItemGroup>
 
     <ItemGroup><PackageReference Include="Soenneker.Utils.Test" Version="4.0.313" />
-        <PackageReference Include="Soenneker.Tests.FixturedUnit" Version="4.0.2278" />
+        <PackageReference Include="Soenneker.Tests.FixturedUnit" Version="4.0.2280" />
         <PackageReference Include="xUnit.v3" Version="3.2.2" />
     </ItemGroup>