Bump Verify.Xunit from 1.3.0 to 1.3.1 in /src

Bumps [Verify.Xunit](https://github.com/SimonCropp/Verify) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/SimonCropp/Verify/releases)
- [Commits](https://github.com/SimonCropp/Verify/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

src/Tests/Tests.csproj

@@ -6,7 +6,7 @@
   <ItemGroup>
     <PackageReference Include="Xunit" Version="2.4.1" />
     <PackageReference Include="XunitContext" Version="1.5.2" />
-    <PackageReference Include="Verify.Xunit" Version="1.3.0" />
+    <PackageReference Include="Verify.Xunit" Version="1.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
     <PackageReference Include="MarkdownSnippets.MsBuild" Version="17.3.1" PrivateAssets="All" />