security/botan2: update to 2.19.5 release (+)

What's new:

• A reminder that Botan2 reaches end of life at the end of 2024
• CVE-2024-34702: Fix a DoS caused by excessive name constraints. (GH #4187)
• CVE-2024-39312: Fix a name constraint processing error, where if permitted and excluded rules both applied to a certificate, only the permitted rules would be checked. (GH #4187)
• Fix a crash in OCB (GH #3812 #3924)
• During certificate verification, first verify the entire chain of certificates, then perform other validation. (GH #4052 #4045)
• Fix a test failure in compression with certain versions of zlib (GH #4135 #3896)
• Fix some iterator debugging errors in TLS CBC decryption. (GH #4125 #4130)
• Avoid a miscompilation in ARIA when using XCode 14 (GH #3465 #3492 #4053)

Full chamgelog: https://botan.randombit.net/news.html#version-2-19-5-2024-07-08