Bump regex from 1.5.3 to 1.5.4
Bump regex from 1.5.3 to 1.5.4

Bumps [regex](https://github.com/rust-lang/regex) from 1.5.3 to 1.5.4.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.5.3...1.5.4)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
dalance/gip