multimedia/tautulli: update to 2.16.0

Important Note!
Several security vulnerabilities have been identified in Tautulli
versions <=2.15.3 (CVE-2025-58760, CVE-2025-58761, CVE-2025-58762,
CVE-2025-58763). Users are strongly encouraged to update to the latest
Tautulli version 2.16.x. (Thanks @d-xuan)

Changelog:

• https://github.com/Tautulli/Tautulli/releases/tag/v2.15.3
• https://github.com/Tautulli/Tautulli/releases/tag/v2.16.0

PR: 289404
Reported by: Michiel van Baak Jansen <michiel@vanbaak.eu>
Approved by: christer.edwards@gmail.com (maintainer timeout; >4 weeks)
MFH: 2025Q4
Security: CVE-2025-58760
Security: CVE-2025-58761
Security: CVE-2025-58762
Security: CVE-2025-58763