Update Microsoft Kiota dependencies to v1.16.0

[christianhelle]

This pull request updates the version of several Microsoft Kiota packages across multiple files. The changes ensure that the codebase uses the latest version of these dependencies.

Package version updates:

• src/Core/ApiClientCodeGen.Core/NuGet/PackageDependencies.cs: Updated the package versions for Microsoft.Kiota.Abstractions, Microsoft.Kiota.Authentication.Azure, Microsoft.Kiota.Http.HttpClientLibrary, Microsoft.Kiota.Serialization.Form, Microsoft.Kiota.Serialization.Json, Microsoft.Kiota.Serialization.Text, and Microsoft.Kiota.Serialization.Multipart from 1.15.2 to 1.16.0.
• src/Core/ApiClientCodeGen.Tests.Common/Build/Projects/KiotaProjectFileContents.cs: Updated the package versions for Microsoft.Kiota.Abstractions, Microsoft.Kiota.Http.HttpClientLibrary, Microsoft.Kiota.Serialization.Form, Microsoft.Kiota.Serialization.Json, Microsoft.Kiota.Serialization.Multipart, and Microsoft.Kiota.Serialization.Text from 1.15.2 to 1.16.0 for both net8.0 and netstandard2.1 target frameworks. [1] [2]
• test/GeneratedCode/Kiota/Directory.build.props: Updated the package versions for Microsoft.Kiota.Abstractions, Microsoft.Kiota.Http.HttpClientLibrary, Microsoft.Kiota.Serialization.Form, Microsoft.Kiota.Serialization.Json, Microsoft.Kiota.Serialization.Multipart, and Microsoft.Kiota.Serialization.Text from 1.15.2 to 1.16.0.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud