build(deps): bump regex from 1.4.3 to 1.4.5

Bumps [regex](https://github.com/rust-lang/regex) from 1.4.3 to 1.4.5.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](rust-lang/regex@1.4.3...1.4.5)

Signed-off-by: dependabot[bot] <support@github.com>