chore(deps): update rust crate regex to v1.12.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
regex	workspace.dependencies	patch	1.12.3 → 1.12.4

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Release Notes

rust-lang/regex (regex)

v1.12.4

Compare Source

===================
This release includes a performance optimization for compilation of regexes
with very large character classes.

Improvements:

• #​1308:
  Avoid re-canonicalizing the entire interval set when pushing new class ranges.

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