build(deps): bump Verify.Xunit from 17.10.2 to 19.3.0 (#158)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/Splat.DependencyInjection.SourceGenerator.Tests/Splat.DependencyInjection.SourceGenerator.Tests.csproj

@@ -14,7 +14,7 @@
     <PackageReference Include="coverlet.msbuild" Version="3.2.0" />
     <PackageReference Include="Verify.SourceGenerators" Version="1.5.0" />
     <PackageReference Include="ReactiveMarbles.SourceGenerator.TestNuGetHelper" Version="1.2.21" />
-    <PackageReference Include="Verify.Xunit" Version="17.10.2" />
+    <PackageReference Include="Verify.Xunit" Version="19.3.0" />
     <PackageRefernece Include="Microsoft.CodeAnalysis.CSharp" Version="3.10.0" PrivateAssets="all" />
   </ItemGroup>