Bump bitarray from 2.4.1 to 2.5.1 (#535)

Bumps [bitarray](https://github.com/ilanschnell/bitarray) from 2.4.1 to 2.5.1.
- [Release notes](https://github.com/ilanschnell/bitarray/releases)
- [Changelog](https://github.com/ilanschnell/bitarray/blob/master/doc/changelog.rst)
- [Commits](ilanschnell/bitarray@2.4.1...2.5.1)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-bitarray==2.4.1
+bitarray==2.5.1
 clkhash==0.16.1
 Cython==0.29.28
 hypothesis==6.9.2