v2.26.0

✨ New Features

• 763eb56 - add new periodic tasks (PR #3774 by @rpcross)

🐛 Bug Fixes

• e06ad1a - Update k8s/elasticsearch.yaml (commit by @NGPixel)
• 3c2dd97 - Update k8s/rabbitmq.yaml (commit by @NGPixel)
• 272cf0d - Update k8s/rabbitmq.yaml (commit by @NGPixel)
• 0672e0b - set CELERY_BEAT_SCHEDULER (PR #3777 by @rpcross)

♻️ Refactors

• 6280f87 - change message import API to use JSON payload (PR #3773 by @rpcross)

🔧 Chores

• 2dba839 - remove fsgroup from mailarchive.yaml manifest (commit by @NGPixel)