Upgrade haproxy 2.9.11 → 3.0.19 LTS (2.9 stream EOL 2025-03)

[acortelyou]

Is your feature request related to a problem? Please describe.

haproxy (in SPECS/haproxy/haproxy.spec) is at 2.9.11 on the 2.9 release stream.

• 🔴 2.9 reached EOL 2025-03-21.
• Newer upstream releases: 4
• Latest upstream release: 3.3.6 (stream 3.3)
• Reference: https://endoflife.date/haproxy (checked 2026-04-22)

Describe the solution you'd like

Upgrade haproxy to 3.0.19 (3.0 LTS).

Describe alternatives you've considered

• Stay on 2.9, assume security maintenance (support ended 2025-03-21).
• Retire the haproxy package.

Additional context

Newer upstream releases:

Stream	LTS?	Latest release	Status	Active support ends	EOL
3.0	⭐ LTS	3.0.19	🟢 supported	—	2029-04-01
3.1		3.1.17	🔴 EOL	—	2026-01-01
3.2	⭐ LTS	3.2.15	🟢 supported	—	2030-04-01
3.3		3.3.6	🟢 supported	—	2027-01-01