You can now delete and restore any package type within GitHub Packages, even publicly visible packages. Any package or package version of yours can now be deleted through the github.com website or REST APIs. The ability to delete any package will help you manage the packages you want to keep in your account. Any package deleted within the last 30 days can also be restored to undo a delete and bring the package back to its original state.
Learn more about deleting and restoring packages and Packages REST APIs
GitHub Advanced Security customers can now view their active committer count for any Advanced Security enabled repositories on their organization or enterprise account's Billing page. These changes help billing administrators track their usage against how many committer licenses they purchased.
For more information see Managing use of Advanced Security for organizations in your enterprise account
You can now limit which branches can deploy to an environment using Environment protection rules.
When a job tries to deploy to an environment with Deployment branches configured Actions will check the value of github.ref against the configuration and if it does not match the job will fail and the run will stop.
The Deployment branches rule can be configured to allow:
All branches – Any branch in the repository can deploy
Protected branches – Only branches with protection rules
Selected branches – Branches matching a set of name patterns
Learn more about Environment protection rules