chore(deps): update dependency xunit.runner.visualstudio to 3.1.5 (#278)

| datasource | package                   | from  | to    |
| ---------- | ------------------------- | ----- | ----- |
| nuget      | xunit.runner.visualstudio | 3.1.4 | 3.1.5 |

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

Author: renovate[bot]

tests/Grafana.OpenTelemetry.Tests/Grafana.OpenTelemetry.Tests.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
 
   <ItemGroup>