Update dependency Soenneker.Tests.FixturedUnit to 3.0.1973 (#66)

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

Author: renovate[bot]

test/Soenneker.Git.LibGit2Sharp.Tests/Soenneker.Git.LibGit2Sharp.Tests.csproj

@@ -25,7 +25,7 @@
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
         <PackageReference Include="Soenneker.Utils.Test" Version="3.0.293" />
-        <PackageReference Include="Soenneker.Tests.FixturedUnit" Version="3.0.1965" />
+        <PackageReference Include="Soenneker.Tests.FixturedUnit" Version="3.0.1973" />
         <PackageReference Include="xUnit.v3" Version="3.0.1" />
     </ItemGroup>