chore: bump version to 3.9.1 [skip ci]

Author: github-actions[bot]

CHANGELOG.md

@@ -1,3 +1,9 @@
+## [v3.9.1](https://github.com/docling-project/docling-ibm-models/releases/tag/v3.9.1) - 2025-09-03
+
+### Fix
+
+* ReadingOrderPredictor: Improve the algorithm for the bounding boxes dilation ([#128](https://github.com/docling-project/docling-ibm-models/issues/128)) ([`82372a1`](https://github.com/docling-project/docling-ibm-models/commit/82372a1a340a4c25de1f30d3cf9fbbe21ebb0da6))
+
 ## [v3.9.0](https://github.com/docling-project/docling-ibm-models/releases/tag/v3.9.0) - 2025-07-23
 
 ### Feature

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "docling-ibm-models"
-version = "3.9.0" # DO NOT EDIT, updated automatically
+version = "3.9.1" # DO NOT EDIT, updated automatically
 description = "This package contains the AI models used by the Docling PDF conversion package"
 license = "MIT"
 keywords = ["docling", "convert", "document", "pdf", "layout model", "segmentation", "table structure", "table former"]