ci: update GitHub Actions to Node 24 runtime (Node 20 deprecation)

[JBWatenbergScality]

Summary

Update GitHub Actions workflow files to use action versions running on Node 24.

Context

GitHub deprecated Node 20 in GitHub Actions runners:
https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

• June 2, 2026: Runners default to Node 24
• Fall 2026: Node 20 completely removed

Changes

Updated: actions/checkout@v4→@v6, docker/build-push-action@v5/v6→@v7, docker/metadata-action@v5→@v6, github/codeql-action@v3→@v4, etc.

[bert-e]

Hello jbwatenbergscality,

My role is to assist you with the merge of this
pull request. Please type @bert-e help to get information
on this process, or consult the user documentation.

Available options

name	description	privileged	authored
/after_pull_request	Wait for the given pull request id to be merged before continuing with the current one.
/bypass_author_approval	Bypass the pull request author's approval	⭐
/bypass_build_status	Bypass the build and test status	⭐
/bypass_commit_size	Bypass the check on the size of the changeset TBA	⭐
/bypass_incompatible_branch	Bypass the check on the source branch prefix	⭐
/bypass_jira_check	Bypass the Jira issue check	⭐
/bypass_peer_approval	Bypass the pull request peers' approval	⭐
/bypass_leader_approval	Bypass the pull request leaders' approval	⭐
/approve	Instruct Bert-E that the author has approved the pull request.		✍️
/create_pull_requests	Allow the creation of integration pull requests.
/create_integration_branches	Allow the creation of integration branches.
/no_octopus	Prevent Wall-E from doing any octopus merge and use multiple consecutive merge instead
/unanimity	Change review acceptance criteria from one reviewer at least to all reviewers
/wait	Instruct Bert-E not to run until further notice.

Available commands

name	description	privileged
/help	Print Bert-E's manual in the pull request.
/status	Print Bert-E's current status in the pull request TBA
/clear	Remove all comments from Bert-E from the history TBA
/retry	Re-start a fresh build TBA
/build	Re-start a fresh build TBA
/force_reset	Delete integration branches & pull requests, and restart merge process from the beginning.
/reset	Try to remove integration branches unless there are commits on them which do not appear on the source branch.

Status report is not available.

[bert-e]

Waiting for approval

The following approvals are needed before I can proceed with the merge:

• the author

• 2 peers

Peer approvals must include at least 1 approval from the following list:

• @m4nch0t

• @TeddyAndrieux

• @anthony-treuillier-scality

• @eg-ayoub

• @g-carre

• @JBWatenbergScality

• @ChengYanJin

• @vdaviot

• @thomasdanan

• @ezekiel-alexrod

[claude]

docker/login-action@v2 in .github/workflows/build.yaml:73 was missed by this PR and still runs on Node 20. It should be updated to @v4 for consistency with the other workflow files.

— Claude Code

[claude]

• docker/login-action@v2 in build.yaml:73 was not updated — it should be bumped to @v4 to match the rest of the workflows.
  
  Review by Claude Code

[claude]

LGTM

Review by Claude Code