Update dependency NUnit to 4.4.0 (#1070)

Co-authored-by: dependencyupdates[bot] <218638057+dependencyupdates[bot]@users.noreply.github.com>

Author: dependencyupdates[bot]

src/Directory.Packages.props

@@ -19,7 +19,7 @@
     <PackageVersion Include="Mindscape.Raygun4Net.AspNetCore" Version="11.2.3" />
     <PackageVersion Include="Npgsql" Version="9.0.3" />
     <PackageVersion Include="NuGet.Versioning" Version="6.14.0" />
-    <PackageVersion Include="NUnit" Version="4.3.2" />
+    <PackageVersion Include="NUnit" Version="4.4.0" />
     <PackageVersion Include="NUnit.Analyzers" Version="4.10.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="5.1.0" />
     <PackageVersion Include="Particular.Approvals" Version="2.0.1" />