security/zeek: Update to 6.0.3

https://github.com/zeek/zeek/releases/tag/v6.0.3

This release fixes the following potential DoS vulnerability:

• A specially-crafted series of packets containing nested MIME entities can cause Zeek to spend large amounts of time parsing the entities.

This release fixes the following bugs:

• CMake correctly passes along third-party package information when building plugins.
• Fix a problem with the HTTP analyzer where a signature regex ending in '$' used to match against 'http-request-body' or 'http-reply-bdoy' will never succeed.
• The DNS analyzer now understands the Ed25519 and Ed448 signature algorithms.
• The SMB::State$recent_files field was not correctly expiring entries, leading to unbounded state growth.
• The &create_expire attribute is now kept valid after clearing a table.

Reported by: Tim Wojtulewicz
Security: fedf7e71-61bd-49ec-aaf0-6da14bdbb319