Bump Microsoft.ML and Microsoft.ML.SampleUtils

Bumps Microsoft.ML from 1.7.1 to 4.0.2
Bumps Microsoft.ML.SampleUtils from 0.19.1 to 0.22.2

---
updated-dependencies:
- dependency-name: Microsoft.ML
  dependency-version: 4.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.ML.SampleUtils
  dependency-version: 0.22.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

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

@@ -7,8 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.ML" Version="1.7.1" />
-    <PackageReference Include="Microsoft.ML.SampleUtils" Version="0.19.1" />
+    <PackageReference Include="Microsoft.ML" Version="4.0.2" />
+    <PackageReference Include="Microsoft.ML.SampleUtils" Version="0.22.2" />
     <PackageReference Include="Microsoft.ML.TensorFlow" Version="1.7.1" />
     <PackageReference Include="SciSharp.TensorFlow.Redist" Version="2.7.0" />
   </ItemGroup>