Update GitHub Actions

[Snuffy2]

This pull request updates several GitHub Actions workflow files to use the latest major versions of third-party actions, standardizes YAML formatting, and improves security and maintainability. The main changes involve switching from pinned minor/patch versions to major versions for actions, updating commit and push steps, and making minor formatting tweaks.

Dependency updates:

• Updated all third-party GitHub Actions (such as actions/checkout, actions/setup-python, actions/upload-artifact, srvaroa/labeler, eps1lon/actions-label-merge-conflict, py-cov-action/python-coverage-comment-action, softprops/action-gh-release, and actions/stale) to use the latest major versions (e.g., @v6 instead of @v6.0.2), which helps ensure ongoing compatibility and security. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]

Workflow improvements:

• Replaced the actions-js/push@master action with the more robust stefanzweifel/git-auto-commit-action@v7 for committing and pushing version changes in the release workflow, improving reliability and maintainability.

Formatting and consistency:

• Standardized YAML formatting by switching to single quotes for strings and aligning indentation, improving readability and consistency across workflow files. [1] [2] [3]

These changes collectively improve the maintainability, security, and clarity of our CI/CD workflows.

[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.