Bump Verify and Verify.NUnit

Bumps Verify from 31.17.0 to 31.18.0
Bumps Verify.NUnit from 31.17.0 to 31.18.0

---
updated-dependencies:
- dependency-name: Verify
  dependency-version: 31.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Verify.NUnit
  dependency-version: 31.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -16,7 +16,7 @@
     <PackageVersion Include="Verify.Http" Version="7.5.1" />
     <PackageVersion Include="Verify.ImageMagick" Version="3.8.8" />
     <PackageVersion Include="Verify.ImageSharp" Version="5.0.1" />
-    <PackageVersion Include="Verify.Nunit" Version="31.17.0" />
+    <PackageVersion Include="Verify.Nunit" Version="31.18.0" />
     <PackageVersion Include="Verify.SqlServer" Version="12.1.1" />
     <PackageVersion Include="Verify.SystemJson" Version="1.4.1" />
     <PackageVersion Include="Verify.WinForms" Version="4.0.0" />
@@ -33,6 +33,6 @@
     <PackageVersion Include="DiffEngine" Version="19.2.0" />
     <PackageVersion Include="EmptyFiles" Version="8.18.1" />
     <PackageVersion Include="SimpleInfoName" Version="3.2.0" />
-    <PackageVersion Include="Verify" Version="31.17.0" />
+    <PackageVersion Include="Verify" Version="31.18.0" />
   </ItemGroup>
 </Project>