chore: bump version to 2.22.0 [skip ci]

Author: github-actions[bot]

CHANGELOG.md

@@ -1,3 +1,10 @@
+## [v2.22.0](https://github.com/DS4SD/docling-core/releases/tag/v2.22.0) - 2025-03-12
+
+### Feature
+
+* Add DoclingDocument.load_from_doctags method and DocTags data models ([#187](https://github.com/DS4SD/docling-core/issues/187)) ([`c065c4c`](https://github.com/DS4SD/docling-core/commit/c065c4c7c62f126879fdf78661521400779602af))
+* Add document tokens for SMILES ([#176](https://github.com/DS4SD/docling-core/issues/176)) ([`32398b8`](https://github.com/DS4SD/docling-core/commit/32398b8ac0c909933b93fd6abea6979acbef8992))
+
 ## [v2.21.2](https://github.com/DS4SD/docling-core/releases/tag/v2.21.2) - 2025-03-06
 
 ### Fix

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "docling-core"
-version = "2.21.2"
+version = "2.22.0"
 description = "A python library to define and validate data types in Docling."
 license = "MIT"
 authors = [