automation: Update docker-mastodon_elasticsearch Docker tag to v8.12.1

This MR contains the following updates:

Package	Update	Change
docker-mastodon_elasticsearch	minor	8.11.3 -> 8.12.1

---

⚠ Dependency Lookup Warnings ⚠

Warnings were logged while processing this repo. Please check the Dependency Dashboard for more information.

---

Release Notes

elastic/elasticsearch

v8.12.1: Elasticsearch 8.12.1

Compare Source

Downloads: https://elastic.co/downloads/elasticsearch Release notes: https://www.elastic.co/guide/en/elasticsearch/reference/8.12/release-notes-8.12.1.html

v8.12.0: Elasticsearch 8.12.0

Compare Source

Downloads: https://elastic.co/downloads/elasticsearch Release notes: https://www.elastic.co/guide/en/elasticsearch/reference/8.12/release-notes-8.12.0.html

v8.11.4: Elasticsearch 8.11.4

Compare Source

Downloads: https://elastic.co/downloads/elasticsearch Release notes: https://www.elastic.co/guide/en/elasticsearch/reference/8.11/release-notes-8.11.4.html

---

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 this update again.

---

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

---

This MR has been generated by Renovate Bot.