Update plugin biz.aQute.bnd.builder to v6

This MR contains the following updates:

Package	Type	Update	Change
biz.aQute.bnd.builder (source)	plugin	major	5.3.0 -> 6.0.0

---

Release Notes

bndtools/bnd

v6.0.0

See Release Notes.

---

Configuration

📅 Schedule: 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 this update again.

---

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

---

This MR has been generated by Renovate Bot.