fix: remove version constraints and also add a note in the readme

Author: vinitkumar

README.rst

@@ -14,6 +14,8 @@ Requirements
 
 django CMS Versioning requires that you have a django CMS 4.0 (or higher) project already running and set up.
 
+Note: This package uses `django-fsm-2<https://github.com/django-commons/django-fsm-2>` (actively maintained by Django Commons) instead of the original `django-fsm<https://github.com/viewflow/django-fsm>` for better support and maintenance.
+
 
 To install
 ==========
@@ -112,4 +114,4 @@ do not forget to run the ``compilemessages`` management command.
 
 .. |CmsVersion| image:: https://img.shields.io/pypi/frameworkversions/django-cms/djangocms-versioning.svg?style=flat-square
     :target: https://pypi.python.org/pypi/djangocms-versioning
-    :alt: django CMS versions
+    :alt: django CMS versions

pyproject.toml

@@ -35,7 +35,7 @@ classifiers = [
 ]
 dependencies = [
     "django-cms>=4.1.1",
-    "django-fsm-2==4.1.0",
+    "django-fsm-2",
     "packaging",
 ]