Bump Verify.NUnit from 30.17.0 to 30.18.0 (#613)

---
updated-dependencies:
- dependency-name: Verify.NUnit
  dependency-version: 30.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -16,7 +16,7 @@
     <PackageVersion Include="ProjectDefaults" Version="1.0.158" />
     <PackageVersion Include="System.ComponentModel.Annotations" Version="5.0.0" />
     <PackageVersion Include="Verify.NServiceBus" Version="10.3.4" />
-    <PackageVersion Include="Verify.Nunit" Version="30.17.0" />
+    <PackageVersion Include="Verify.Nunit" Version="30.18.0" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.2" />
   </ItemGroup>
 </Project>