chore(csharp): Bump xunit.runner.visualstudio from 3.1.4 to 3.1.5 (#19)

Updated
[xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit)
from 3.1.4 to 3.1.5.

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csharp/test/AdbcDrivers.BigQuery.Tests.csproj

@@ -8,7 +8,7 @@
      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
      <PackageReference Include="System.Net.Http.WinHttpHandler" Version="8.0.2" Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard'" />
      <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">
        <PrivateAssets>all</PrivateAssets>
        <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      </PackageReference>