Bump Microsoft.NET.Test.Sdk from 16.8.0 to 17.3.0 (#1024)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 16.8.0 to 17.3.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v16.8.0...v17.3.0)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -29,7 +29,7 @@
         <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="$(MsExtensionNugetVersion)"/>
         <PackageVersion Include="Microsoft.Extensions.Configuration.Abstractions" Version="$(MsExtensionNugetVersion)"/>
         <PackageVersion Include="Microsoft.Extensions.Options" Version="$(MsExtensionNugetVersion)"/>
-        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="16.8.0"/>
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.3.0"/>
         <PackageVersion Include="xunit" Version="2.4.1"/>
         <PackageVersion Include="xunit.runner.visualstudio" Version="2.4.3"/>
         <PackageVersion Include="Statiq.Core" Version="1.0.0-beta.48"/>