chore: update dependency microsoft.net.test.sdk to 18.10.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.NET.Test.Sdk	18.9.0 → 18.10.0

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Release Notes

microsoft/vstest (Microsoft.NET.Test.Sdk)

v18.10.0

What's Changed

• Drop Mono fallback, run .NET Framework tests on Windows only by @​nohwnd in #​16158
• Run Microsoft.Testing.Platform test apps under vstest.console and datacollector by @​nohwnd in #​16201
• Fix test output eaten by MSBuild terminal logger by @​nohwnd in #​16223
• Remove the experimental test session feature by @​nohwnd in #​16231
• Skip a single bad executor instead of failing all executor loading by @​nohwnd in #​16239
• Assert apartment state instead of using Clipboard in UI tests by @​nohwnd in #​16270
• Surface test host crashes during protocol negotiation by @​nohwnd in #​16285
• Pass the inferred target platform to the host in run settings by @​nohwnd in #​16271
• Report raw invalid IsTargetPlatformInferred value, cover host x64 forcing by @​nohwnd in #​16295
• Disable the MTP testhost by default (#​16337) by @​nohwnd in #​16341

Full Changelog: microsoft/vstest@v18.9.0...v18.10.0

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Code Review

This pull request updates the Microsoft.NET.Test.Sdk dependency version from 18.9.0 to 18.10.0 in both spannerlib-dotnet-grpc-tests.csproj and spannerlib-dotnet-tests.csproj. No review comments were provided, and there is no additional feedback.