build(deps): bump bitarray from 3.9.0 to 3.9.1

Bumps [bitarray](https://github.com/ilanschnell/bitarray) from 3.9.0 to 3.9.1.
- [Changelog](https://github.com/ilanschnell/bitarray/blob/master/doc/changelog.rst)
- [Commits](ilanschnell/bitarray@3.9.0...3.9.1)

---
updated-dependencies:
- dependency-name: bitarray
  dependency-version: 3.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ aiohttp==3.14.1
 aiosignal==1.4.0
 annotated-types==0.7.0
 attrs==26.1.0
-bitarray==3.9.0
+bitarray==3.9.1
 blinker==1.9.0
 certifi==2026.6.17
 charset-normalizer==3.4.9