chore(deps): update gitlab-registry.in2p3.fr/cta-lapp/phoenix_libs2/citoolkit/phoenixcontainer/pixi docker tag to v2

This MR contains the following updates:

Package	Type	Update	Change
gitlab-registry.in2p3.fr/cta-lapp/phoenix_libs2/citoolkit/phoenixcontainer/pixi	image	major	1.1.0 -> 2.1.0

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻️ Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

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

---

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

---

This MR has been generated by Renovate Bot.