Update dependency xunit to v2.5.0 (#517)

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

Author: renovate[bot]

src/Cake.Issues.Reporting.Generic.Tests/Cake.Issues.Reporting.Generic.Tests.csproj

@@ -41,7 +41,7 @@
       <Version>1.1.118</Version>
     </PackageReference>
     <PackageReference Include="xunit">
-      <Version>2.4.2</Version>
+      <Version>2.5.0</Version>
     </PackageReference>
     <PackageReference Include="xunit.runner.visualstudio">
       <Version>2.4.5</Version>