Summary

Fixes the Rocket.Chat deployment failure caused by MongoDB health check issues.

Changes

• Updated MongoDB image from bitnamilegacy/mongodb:5.0 to bitnami/mongodb:6.0
• Replaced deprecated mongo shell command with mongosh in health check
• Changed health check from echo 'db.stats().ok' | mongo to mongosh --eval 'db.runCommand("ping").ok'

Root Cause

The bitnamilegacy/mongodb:5.0 image uses the old mongo shell which has been deprecated. MongoDB 6.0+ uses mongosh as the default shell. The health check was failing because:

1. The legacy image may not work properly on some systems (like AlmaLinux 10)
2. The health check command syntax was outdated

Test Plan

• Deploy Rocket.Chat service using the updated template
• Verify MongoDB container passes health check
• Verify Rocket.Chat successfully connects to MongoDB

Fixes #7941

/claim #7941