Update minio/mc Docker tag to vRELEASE.2021-09-02T09-21-27Z

This MR contains the following updates:

Package	Type	Update	Change
minio/mc	ironbank-docker	minor	RELEASE.2021-07-27T06-46-19Z -> RELEASE.2021-09-02T09-21-27Z
minio/mc		minor	RELEASE.2021-07-27T06-46-19Z -> RELEASE.2021-09-02T09-21-27Z
minio/mc	stage	minor	RELEASE.2021-07-27T06-46-19Z -> RELEASE.2021-09-02T09-21-27Z

---

Configuration

📅 Schedule: 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 these updates again.

---

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

---

This MR has been generated by Renovate Bot.