Bump the tests group with 1 update

Bumps xunit.runner.visualstudio from 3.1.3 to 3.1.5

---
updated-dependencies:
- dependency-name: xunit.runner.visualstudio
  dependency-version: 3.1.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: tests
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/NuGetizer.Tests/NuGetizer.Tests.csproj

@@ -13,7 +13,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.3" PrivateAssets="all" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" PrivateAssets="all" />
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.3" />
     <PackageReference Include="Microsoft.Build" Version="17.13.9" ExcludeAssets="runtime" />
     <PackageReference Include="Microsoft.Build.Tasks.Core" Version="17.10.29" ExcludeAssets="runtime" />