Bump System.Interactive from 5.1.0 to 6.0.1

Bumps [System.Interactive](https://github.com/dotnet/reactive) from 5.1.0 to 6.0.1.
- [Release notes](https://github.com/dotnet/reactive/releases)
- [Commits](dotnet/reactive@ixnet-v5.1.0...ixnet-v6.0.1)

---
updated-dependencies:
- dependency-name: System.Interactive
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Directory.Packages.props

@@ -32,7 +32,7 @@
     <PackageVersion Include="NetEscapades.Configuration.Yaml" Version="2.1.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageVersion Include="System.Collections.Immutable" Version="6.0.0" />
-    <PackageVersion Include="System.Interactive" Version="5.1.0" />
+    <PackageVersion Include="System.Interactive" Version="6.0.1" />
     <PackageVersion Include="System.Interactive.Async" Version="5.1.0" />
     <PackageVersion Include="System.Reactive" Version="5.0.0" />
     <PackageVersion Include="System.Reactive.Observable.Aliases" Version="5.0.0" />