chore(deps): update dependency xunit.runner.visualstudio to v2.8.2

Author: renovate[bot]

tests/Prometheus.Client.AspNetCore.Tests.csproj

@@ -27,7 +27,7 @@
     <PackageReference Include="xunit" Version="2.9.0" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' != 'netcoreapp3.1'" >
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)' == 'netcoreapp3.1'">
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.*" />