Bump NHibernate from 5.3.10 to 5.4.9 in /CSharpClassLibrary

Bumps [NHibernate](https://github.com/nhibernate/nhibernate-core) from 5.3.10 to 5.4.9.
- [Release notes](https://github.com/nhibernate/nhibernate-core/releases)
- [Changelog](https://github.com/nhibernate/nhibernate-core/blob/master/releasenotes.txt)
- [Commits](nhibernate/nhibernate-core@5.3.10...5.4.9)

---
updated-dependencies:
- dependency-name: NHibernate
  dependency-type: direct:production
...

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

CSharpClassLibrary/CSharpClassLibrary.csproj

@@ -40,7 +40,7 @@
     <PackageReference Include="IronPython.Interpreter" Version="2.7.4" />
     <PackageReference Include="IronPython.StdLib" Version="2.7.11" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="6.0.0" />
-    <PackageReference Include="NHibernate" Version="5.3.10" />
+    <PackageReference Include="NHibernate" Version="5.4.9" />
     <PackageReference Include="Nito.Try" Version="1.1.1" />
     <PackageReference Include="Serilog" Version="2.10.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="4.0.0" />