Deployment preparation: `L2GaugeCheckpointer`

[jubeira]

Deployment preparation: L2GaugeCheckpointer

Build-info: monorepo-master@https://github.com/balancer/balancer-v2-monorepo/commit/cbce7d63479dafb4f4ea9ad8cb2dbdbb26edae50.

The block number is right before the latest available manual checkpoint.

At that point we already have the GaugeAdder V4 deployed as well as its coordinator script. The only pending step was to run the coordinator.

Deployment preparation tasks checklist:

• [x] Deployments README is updated with the new task name and link
• [x] Task README has a description and links to the artifacts
• [x] build-info is updated with artifacts compiled at the specified commit
• [x] Artifacts are generated from build-info
• [x] New task has a working fork test

Deprecating old tasks checklist: N/A

Note: existing 20221205-l2-gauge-checkpointer task was removed since it was never used. See https://etherscan.io/address/0xf23b4DB826DbA14c0e857029dfF076b1c0264843 (no events emitted, no gauges added, etc). No permissions have been granted to the contract either.

Code checklist:

• [x] The diff is legible and has no extraneous changes
• [x] Complex code has been commented in tests and scripts
• [x] Fork test block number and test cases are appropriate for this deployment
• [x] The base branch is either master, or there's a description of how to merge

Issue Resolution

N/A