Change IT intern passwords

[KCollins007]

Agree on a new password (either passphrase or generated via KeePass), update the KeePass file and the Extra Comments document.

• [x] DB2 mariadb
• [x] DB2 security
• [x] DB3 docker
• [x] Kate 2.0
• [x] SQL Server (SSMS)
• [x] Kate 1.5 (physical) fthicthome01.ict.op.ac.nz
• [x] RT20.04