Revert "ver-0.9.0.dev0 (#2429)" (#2431)

This reverts commit 51f2234.

Author: sampathweb

keras_cv/src/version_utils.py

@@ -15,7 +15,7 @@
 from keras_cv.src.api_export import keras_cv_export
 
 # Unique source of truth for the version number.
-__version__ = "0.9.0.dev0"
+__version__ = "0.9.0"
 
 
 @keras_cv_export("keras_cv.version")