feat: add Nuget Packages Version Change Detector workflow

[maliming]

Resolves #24797

9.0.0

Package	Old Version	New Version	PR
Microsoft.Extensions.Logging	8.0.0	8.0.1	#123
Newtonsoft.Json	13.0.1	13.0.3	#456, #789

Added:

Package	Version	PR
Azure.Identity	1.10.0	#567

Removed:

Package	Version	PR
System.Text.Json	7.0.0	#890

[Copilot]

Pull request overview

This PR introduces a GitHub Actions workflow that automatically detects NuGet package version changes in pull requests and maintains documentation of these changes. When a PR modifies Directory.Packages.props, the workflow adds a dependency-change label and updates a markdown document tracking version changes by release version.

Changes:

• Added a new GitHub Actions workflow that triggers on PRs modifying Directory.Packages.props
• Created a Python script that parses package version diffs, merges changes across multiple PRs, and generates/updates version change documentation
• Implements automatic labeling and documentation generation to improve visibility of dependency updates

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 15 comments.

File	Description
.github/workflows/nuget-packages-version-change-detector.yml	Defines the workflow that triggers on Directory.Packages.props changes, adds the dependency-change label, and commits documentation updates
.github/scripts/update_dependency_changes.py	Python script that compares package versions between branches, merges changes from multiple PRs, and generates markdown documentation

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 11 comments.