chore(deps): update dependency xunit to v2.5.0

Author: renovate[bot]

Diff for: src/Promitor.Parsers.Prometheus.Tests/Promitor.Parsers.Prometheus.Tests.csproj

@@ -22,7 +22,7 @@
   <ItemGroup>
 	<PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
 	<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
-    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit" Version="2.5.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>