Add automation for updating `acorn` dependency
Add a Github Action that checks for new versions of the acorn and acorn-walk dependencies, and creates PRs to update them if newer versions than the ones present in the repo are found.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Add a Github Action that checks for new versions of the acorn and acorn-walk dependencies, and creates PRs to update them if newer versions than the ones present in the repo are found.