Deployment preparation: StableSurgeHook (fixes)

[jubeira]

Deployment preparation: StableSurgeHook

build-info: balancer/balancer-v3-monorepo@767a6a1 (includes fixes from audit)

Deployment preparation tasks checklist:

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

Deprecating old tasks checklist: N/A

Code checklist:

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

Issue Resolution

N/A

[joaobrunoah]

LGTM! The build-info matches the specified commit. I also verified that StablePool.json did not change.
The CI failure is unrelated to this PR.

[joaobrunoah]

LGTM!