Update the release workflow

[vprashar2929]

Currently, as part of our release workflow, we manually disable branch protection rules each time we push changes directly to the main branch (v1alpha1). To streamline this process, an alternative approach could be to create a dedicated release branch, tag it with the desired version, and make changes there. The workflow would then automatically create a pull request from the release branch to the main branch, ensuring that all changes are reviewed and merged without needing to disable the branch protection rules.