Update version and TF version requirement for TFP 0.20.0 release.

Author: jburnim

tensorflow_probability/python/__init__.py

@@ -51,7 +51,7 @@ def _validate_tf_environment(package):
   #
   # Update this whenever we need to depend on a newer TensorFlow release.
   #
-  required_tensorflow_version = '2.11'
+  required_tensorflow_version = '2.12'
 #   required_tensorflow_version = '1.15'  # Needed internally -- DisableOnExport
 
   if (distutils.version.LooseVersion(tf.__version__) <

tensorflow_probability/python/version.py

@@ -24,7 +24,7 @@
 # stable release (indicated by `_VERSION_SUFFIX = ''`). Outside the context of a
 # release branch, the current version is by default assumed to be a
 # 'development' version, labeled 'dev'.
-_VERSION_SUFFIX = 'dev'
+_VERSION_SUFFIX = ''
 
 # Example, '0.4.0-dev'
 __version__ = '.'.join([