chore(deps): update rust crate regex to v1.12.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
regex	dependencies	patch	1.12.2 → 1.12.3

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Release Notes

rust-lang/regex (regex)

v1.12.3

===================
This release excludes some unnecessary things from the archive published to
crates.io. Specifically, fuzzing data and various shell scripts are now
excluded. If you run into problems, please file an issue.

Improvements:

• #​1319:
  Switch from a Cargo exclude list to an include list, and exclude some
  unnecessary stuff.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (47798b4) to head (b9b7ea8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@     Coverage Diff     @@
##   main   #166   +/-   ##
===========================
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