…tions workflow

- Added support for beta releases in the release script, allowing users to create beta versions with the `--beta` flag.
- Updated usage instructions to include examples for beta releases.
- Implemented logic to determine the next beta version number.
- Modified GitHub Actions workflow to handle beta releases, including conditional steps for tagging and Docker image builds.
- Ensured Homebrew updates only occur for stable releases, excluding beta versions.

- Enhanced version validation in the release script to accept both stable and beta formats (X.Y.Z and X.Y.Z-beta.N).
- Clarified branch and tag triggers in the GitHub Actions workflow for better release management.
- Adjusted output handling for versioning in the workflow to ensure correct tagging for Docker images.