Upgrade Core to 1b3ab73db3f0a4dfe0e1ee1e59601a81bfe100fe

[jviotti]

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

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No issues found across 4 files

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[augmentcode]

🤖 Augment PR Summary

Summary: This PR updates the vendored sourcemeta/core dependency and incorporates upstream fixes.

Changes:

• Bumps core to commit 1b3ab73d… via DEPENDENCIES
• Updates ARM CRC32 implementation to use compiler builtins instead of including <arm_acle.h> (to avoid toolchain/header issues under Werror)
• Refactors is_under_path to reuse a shared component-wise prefix check helper
• Adds is_lexically_under_path for filesystem-independent, component-by-component path prefix checks

Technical Notes: The new lexical helper relies on lexically_normal()-based normalization and avoids filesystem resolution, while the canonical variant continues to use weakly_canonical().

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