Bump Verify.Xunit from 30.4.0 to 30.6.1

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-version: 30.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tests/Serilog.Formatting.Log4Net.Tests.csproj

@@ -15,7 +15,7 @@
     <PackageReference Include="Serilog" Version="4.3.0" />
     <PackageReference Include="Serilog.Enrichers.Environment" Version="3.0.1" />
     <PackageReference Include="Serilog.Enrichers.Thread" Version="4.0.0" />
-    <PackageReference Include="Verify.Xunit" Version="30.4.0" />
+    <PackageReference Include="Verify.Xunit" Version="30.6.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.1" PrivateAssets="all" />
   </ItemGroup>