chore(deps): update xunit-dotnet monorepo to 2.9.3

Author: renovate[bot]

src/Akavache.Tests/Akavache.Tests.csproj

@@ -14,8 +14,8 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="6.0.1" />
-    <PackageReference Include="xunit" Version="2.9.2" />
-    <PackageReference Include="xunit.runner.console" Version="2.9.2" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.console" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
     <PackageReference Include="Xunit.StaFact" Version="1.1.11" />