Bump regex from 2023.5.5 to 2023.8.8

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2023.5.5 to 2023.8.8.
- [Changelog](https://github.com/mrabarnett/mrab-regex/blob/hg/changelog.txt)
- [Commits](mrabarnett/mrab-regex@2023.5.5...2023.8.8)

---
updated-dependencies:
- dependency-name: regex
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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