[BUMP] Update dependency renovate to v39 (dossier racine)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
renovate (source)	^38.0.0 -> ^39.0.0

---

Release Notes

renovatebot/renovate (renovate)

v39.0.0

Compare Source

⚠ BREAKING CHANGES

• branchNameStrict: Branch names with multiple forward slashes will change if branchNameStrict=true
• deps: Renovate sidecard images will default to use Ubuntu 24.04 instead of 20.04, and use User ID 12021 instead of 1001
• deps: The Renovate full image now uses Ubuntu 24.04, Python 3.13 and Node v22
• github: Renovate will now prefer squash merges over others in GitHub, if they are allowed.
• Dockerfile: Renovate -full images will now use binarySource=global. Set RENOVATE_BINARY_SOURCE=install to revert to dynamic tool installation.
• Renovate Docker images will now be based on Node.js v22 instead of v20

Features

• branchNameStrict: remove forward slashes from non-prefix part of branchName (#​32278) (a6d93dc)
• deps: update ghcr.io/containerbase/sidecar docker tag to v13 (#​32095) (0f2783c)
• deps: update ghcr.io/renovatebot/base-image docker tag to v9 (#​32240) (2d9cd61)
• Dockerfile: set binarySource=global for full image (#​32272) (4f62bff), closes #​32136

Bug Fixes

• github: change automerge priority order to prefer squash (#​32016) (b0bc3e8)

Build System

• Update to Node v22 (#​32182) (c8cb839), closes #​32068

---

Configuration

📅 Schedule: Branch creation - "every 1 hour every weekday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Never, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.