Bump Microsoft.ML.SampleUtils

Bumps [Microsoft.ML.SampleUtils](https://github.com/dotnet/machinelearning) from 0.19.1 to 0.20.0.
- [Release notes](https://github.com/dotnet/machinelearning/releases)
- [Commits](https://github.com/dotnet/machinelearning/commits)

---
updated-dependencies:
- dependency-name: Microsoft.ML.SampleUtils
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

docs/machine-learning/tutorials/snippets/text-classification-tf/csharp/TextClassificationTF.csproj

@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.ML" Version="2.0.0" />
-    <PackageReference Include="Microsoft.ML.SampleUtils" Version="0.19.1" />
+    <PackageReference Include="Microsoft.ML.SampleUtils" Version="0.20.0" />
     <PackageReference Include="Microsoft.ML.TensorFlow" Version="1.7.1" />
     <PackageReference Include="SciSharp.TensorFlow.Redist" Version="2.7.0" />
   </ItemGroup>