security/barnyard2*: Mark DEPRECATED
- Upstream has archived the project in 2024
- This only works with snort2 and support of snort2 is being silently dropped by upstream in favor of snort3
- Set EXPIRATION_DATE 2026-08-07
(cherry picked from commit 3f5ab56aeb6c9d753911b6f4c2c65560a0b3118e)