Update dependency xunit to v2.6.2

Author: renovate-bot

shared.tests/shared.tests.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Testcontainers" Version="3.5.0" />
-    <PackageReference Include="xunit" Version="2.5.0" />
+    <PackageReference Include="xunit" Version="2.6.2" />
   </ItemGroup>
 
 </Project>