Bump RestSharp in /Samples/DotNetSdk/NWFWMD-LabFileImporter

Bumps [RestSharp](https://github.com/restsharp/RestSharp) from 106.11.7 to 106.12.0.
- [Release notes](https://github.com/restsharp/RestSharp/releases)
- [Changelog](https://github.com/restsharp/RestSharp/blob/dev/releasenotes.md)
- [Commits](restsharp/RestSharp@106.11.7...106.12)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Samples/DotNetSdk/NWFWMD-LabFileImporter/packages.config

@@ -12,7 +12,7 @@
   <package id="Microsoft.CSharp" version="4.5.0" targetFramework="net472" />
   <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net472" />
   <package id="NodaTime" version="1.3.0" targetFramework="net472" />
-  <package id="RestSharp" version="106.11.7" targetFramework="net472" />
+  <package id="RestSharp" version="106.12.0" targetFramework="net472" />
   <package id="ServiceStack.Client" version="5.10.4" targetFramework="net472" />
   <package id="ServiceStack.HttpClient" version="5.10.4" targetFramework="net472" />
   <package id="ServiceStack.Interfaces" version="5.10.4" targetFramework="net472" />