Bump IronPython

Bumps the dotnet group in /docs/csharp/advanced-topics/interop/snippets/dynamic-iron-python-walkthrough with 1 update: [IronPython](https://github.com/IronLanguages/ironpython3).


Updates `IronPython` from 3.4.1 to 3.4.2
- [Release notes](https://github.com/IronLanguages/ironpython3/releases)
- [Changelog](https://github.com/IronLanguages/ironpython3/blob/main/WhatsNewInPython30.md)
- [Commits](IronLanguages/ironpython3@v3.4.1...v3.4.2)

---
updated-dependencies:
- dependency-name: IronPython
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

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

docs/csharp/advanced-topics/interop/snippets/dynamic-iron-python-walkthrough/ironpythonsample.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="IronPython" Version="3.4.1" />
+    <PackageReference Include="IronPython" Version="3.4.2" />
   </ItemGroup>
 
 </Project>