chore(release): 2.2.1 [skip ci]

## [2.2.1](v2.2.0...v2.2.1) (2026-06-08)

### Bug Fixes

* **deps:** remove upper bounds on direct dependencies ([#88](#88)) ([e0afc06](e0afc06))

Author: semantic-release-bot

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "atomworks"
-version = "2.2.0"
+version = "2.2.1"
 description = "A research-oriented data toolkit for training biomolecular deep-learning foundation models"
 readme = "README.md"
 requires-python = ">=3.11"