Fix crash on unevaluatedProperties and a default identifier

[jviotti]

Fixes: #756
Signed-off-by: Juan Cruz Viotti jv@jviotti.com

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No issues found across 16 files

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🤖 Augment PR Summary

Summary: This PR updates vendored dependencies and fixes a crash related to unevaluatedProperties by improving how Blaze registers unevaluated entries across alternate schema identifiers/bases.

Changes:

• Blaze: registers `unevaluatedProperties` / `unevaluatedItems` under all reachable base URIs for the same schema pointer to avoid missing lookups and crashes.
• Core: adds a new email component with RFC 5321 mailbox validation (is_email).
• Core I/O: introduces non-atomic write_file overloads for strings, byte spans, and stream-writer callbacks.
• URI Template: adds URITemplate::is_uritemplate for validation without constructing the parsed token representation.
• URI Template Router: extends supported template syntax with optional greedy capture ({/var*}) and adds an optional base_url metadata field.
• Router serialization: bumps the binary router format version and persists/restores base_url and optional-expansion semantics.
• Build system: wires the new Core email component into CMake options/config.

Technical Notes: The router format is versioned; this PR increments the version to reflect header/layout and matching behavior changes.

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