bump version to v4.9.0

Author: ychalier

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='django-orgapy',
-    version='4.9.0-a.7',
+    version='4.9.0',
     packages=["orgapy"],
     include_package_data=True,
     license='GNU GPLv3',