build(deps): bump bitstring from 4.1.4 to 4.3.0

Bumps [bitstring](https://github.com/scott-griffiths/bitstring) from 4.1.4 to 4.3.0.
- [Release notes](https://github.com/scott-griffiths/bitstring/releases)
- [Changelog](https://github.com/scott-griffiths/bitstring/blob/main/release_notes.md)
- [Commits](scott-griffiths/bitstring@bitstring-4.1.4...bitstring-4.3.0)

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

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