Bump Verify.Xunit from 28.3.2 to 28.4.0 (#280)

Bumps [Verify.Xunit](https://github.com/VerifyTests/Verify) from 28.3.2
to 28.4.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/VerifyTests/Verify/commit/ad73307d16f56c976b59729dbc0e3633ad91330a"><code>ad73307</code></a>
Add support for TUnit Class Constructors (<a
href="https://redirect.github.com/VerifyTests/Verify/issues/1362">#1362</a>)</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/fd58c7bb5a13a6960a785b41817a37f9f8a97444"><code>fd58c7b</code></a>
Update Directory.Build.props</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/ae7226aa3eb48960cbcb02fee7488ec0328ee88f"><code>ae7226a</code></a>
update to TUnit 0.4.1 (<a
href="https://redirect.github.com/VerifyTests/Verify/issues/1361">#1361</a>)</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/6497fed4fe5ebe84bcf72b3954681eec435c908d"><code>6497fed</code></a>
refs and cleanup</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/9846edf1bc7775a40e5e007573557ac67925929f"><code>9846edf</code></a>
refs and cleanup</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/57b75b901b5dc1c20b7ced729b894065a0050b40"><code>57b75b9</code></a>
docs</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/a54b5934ae70f05c38d5bc67ca3ccdcd17e1e1b6"><code>a54b593</code></a>
refs</li>
<li><a
href="https://github.com/VerifyTests/Verify/commit/6448db15ea5004a5f5407039bd51972f4331b3f5"><code>6448db1</code></a>
remove fody (<a
href="https://redirect.github.com/VerifyTests/Verify/issues/1353">#1353</a>)</li>
<li>See full diff in <a
href="https://github.com/VerifyTests/Verify/compare/28.3.2...28.4.0">compare
view</a></li>
</ul>
</details>
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build/targets/tests/Packages.props

@@ -4,7 +4,7 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2-beta1.24314.1" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Verify.Nupkg" Version="1.1.6" />
-    <PackageVersion Include="Verify.Xunit" Version="28.3.2" />
+    <PackageVersion Include="Verify.Xunit" Version="28.4.0" />
     <PackageVersion Include="xunit" Version="2.9.2" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
     <PackageVersion Include="Meziantou.Xunit.ParallelTestFramework" Version="2.3.0" />