⬆️ Bump bitarray from 2.8.2 to 2.8.4

Bumps [bitarray](https://github.com/ilanschnell/bitarray) from 2.8.2 to 2.8.4.
- [Changelog](https://github.com/ilanschnell/bitarray/blob/master/doc/changelog.rst)
- [Commits](ilanschnell/bitarray@2.8.2...2.8.4)

---
updated-dependencies:
- dependency-name: bitarray
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>