fix(deps): update renovate/renovate docker tag to v34.21.4

This MR contains the following updates:

Package	Update	Change
renovate/renovate	patch	34.21.3-slim -> 34.21.4-slim

---

Release Notes

renovatebot/renovate

v34.21.4

Miscellaneous Chores

• Revert "chore: process labels on pull requests" (#​18838) (9111a6b)

Documentation

• Add pnpm-lock.yaml to supported lock files (#​18844) (53c4120)
• regex: improve link name (#​18841) (29c12e6)

Build System

• deps: update dependency @​opentelemetry/instrumentation-bunyan to v0.30.1 (#​18846) (9b5dd8c)

---

Configuration

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

🚦 Automerge: Enabled.

♻ Rebasing: Whenever MR is behind base branch, or you tick the rebase/retry checkbox.

👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

---

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

---

This MR has been generated by Renovate Bot.