Bump NUnit.Analyzers from 4.3.0 to 4.4.0 in /src

Bumps [NUnit.Analyzers](https://github.com/nunit/nunit.analyzers) from 4.3.0 to 4.4.0.
- [Release notes](https://github.com/nunit/nunit.analyzers/releases)
- [Changelog](https://github.com/nunit/nunit.analyzers/blob/master/CHANGES.md)
- [Commits](nunit/nunit.analyzers@4.3.0...4.4.0)

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

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

src/Directory.Packages.props

@@ -48,7 +48,7 @@
     <PackageVersion Include="NServiceBus.Transport.PostgreSql" Version="8.1.6" />
     <PackageVersion Include="NuGet.Versioning" Version="6.12.1" />
     <PackageVersion Include="NUnit" Version="4.2.2" />
-    <PackageVersion Include="NUnit.Analyzers" Version="4.3.0" />
+    <PackageVersion Include="NUnit.Analyzers" Version="4.4.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageVersion Include="Particular.Approvals" Version="2.0.0" />
     <PackageVersion Include="Particular.Licensing.Sources" Version="5.1.0" />