docs(changelog): add workflow to manage stale issues

Include a GitHub Actions workflow that automates the handling
of stale issues and pull requests. This change aims to improve
maintenance efficiency by automatically labeling and closing
inactive issues and PRs, helping developers focus on active
tasks and prioritize updates.

Author: DefinitelyADev

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - GitHub Actions labeler configuration for automatic PR labeling based on modified paths
 - Coverage reporting to pytest with XML output for CI integration
+- GitHub Actions workflow to automatically manage stale issues and pull requests
 
 ### Fixed
 - Updated CI workflow to upload coverage reports for Python 3.12