Bump art from 6.3 to 6.4 (#188)

Bumps [art](https://github.com/sepandhaghighi/art) from 6.3 to 6.4.
- [Release notes](https://github.com/sepandhaghighi/art/releases)
- [Changelog](https://github.com/sepandhaghighi/art/blob/master/CHANGELOG.md)
- [Commits](sepandhaghighi/art@v6.3...v6.4)

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

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

dev-requirements.txt

@@ -1,4 +1,4 @@
-art==6.3
+art==6.4
 pyyaml==6.0.2
 scipy>=1.2.0
 networkx>=2.1