chore(deps): update helm release base to v1.29.0

This MR contains the following updates:

Package	Update	Change
base	minor	1.28.3 -> 1.29.0

Complete MR checklist

Assignee

• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

Add supporting info below

Reviewer only

• Tested and Validated changes

---

Release Notes

istio/istio (base)

v1.29.0: Istio 1.29.0

Compare Source

Artifacts Release Notes

v1.28.4: Istio 1.28.4

Compare Source

Artifacts Release Notes

---

Configuration

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

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

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

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

---

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

---

This MR was automatically generated by Renovate Bot.

Upgrade Notices

(Include any relevant notes about upgrades here or write "N/A" if there are none)

issue