Stabilise protocol alpha into beta

What

Stabilise protocol alpha into beta.

Why

To stabilise before snapshotting

How

By running a currently unmerged script.

Manually testing the MR

Please don't. 🤡

make

# start a sandbox node
./src/bin_node/octez-sandboxed-node.sh 1

# in a second terminal start a client
eval `./src/bin_client/octez-init-sandboxed-client.sh 1`
octez-activate-beta

# enjoy your node running on the beta protocol

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR