Bump NLog.Extensions.Logging from 5.3.15 to 5.4.0 in /src (#4770)

Bumps [NLog.Extensions.Logging](https://github.com/NLog/NLog.Extensions.Logging) from 5.3.15 to 5.4.0.
- [Release notes](https://github.com/NLog/NLog.Extensions.Logging/releases)
- [Changelog](https://github.com/NLog/NLog.Extensions.Logging/blob/master/CHANGELOG.MD)
- [Commits](NLog/NLog.Extensions.Logging@v5.3.15...v5.4.0)

---
updated-dependencies:
- dependency-name: NLog.Extensions.Logging
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -27,7 +27,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Microsoft-WindowsAPICodePack-Shell" Version="1.1.5" />
     <PackageVersion Include="Mindscape.Raygun4Net.NetCore" Version="11.2.1" />
-    <PackageVersion Include="NLog.Extensions.Logging" Version="5.3.15" />
+    <PackageVersion Include="NLog.Extensions.Logging" Version="5.4.0" />
     <PackageVersion Include="NServiceBus" Version="9.2.4" />
     <PackageVersion Include="NServiceBus.AcceptanceTesting" Version="9.2.4" />
     <PackageVersion Include="NServiceBus.AmazonSQS" Version="7.1.1" />