deps: Bump Verify.XunitV3 from 31.18.0 to 31.20.0

---
updated-dependencies:
- dependency-name: Verify.XunitV3
  dependency-version: 31.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -20,7 +20,7 @@
     <PackageVersion Include="xunit.v3.mtp-v2" Version="3.2.2" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.4" />
     <PackageVersion Include="Verify.DiffPlex" Version="3.2.0" />
-    <PackageVersion Include="Verify.XunitV3" Version="31.18.0" />
+    <PackageVersion Include="Verify.XunitV3" Version="31.20.0" />
     <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="10.6.0" />
     <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.7.0" />
   </ItemGroup>