Bump Moq from 4.11.0 to 4.18.2 (#153)

Bumps [Moq](https://github.com/moq/moq4) from 4.11.0 to 4.18.2.
- [Release notes](https://github.com/moq/moq4/releases)
- [Changelog](https://github.com/moq/moq4/blob/main/CHANGELOG.md)
- [Commits](devlooped/moq@v4.11.0...v4.18.2)

---
updated-dependencies:
- dependency-name: Moq
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

smtpserver/Rnwood.SmtpServer.Tests/Rnwood.SmtpServer.Tests.csproj

@@ -26,7 +26,7 @@
     <PackageReference Include="System.Collections.NonGeneric" Version="4.3.0" />
     <PackageReference Include="System.Net.Security" Version="4.3.2" />
     <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="Moq" Version="4.11.0" />
+    <PackageReference Include="Moq" Version="4.18.2" />
     <PackageReference Include="MailKit" Version="2.5.2" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.3.12" />
   </ItemGroup>