Bump python client to 4.9.1






Reviewers: Sijie Guo <sijie@apache.org>

This closes #1994 from eolivelli/fix/bump-python-client-version-491
diff --git a/stream/clients/python/setup.py b/stream/clients/python/setup.py
index c5046b3..104b2b8 100644
--- a/stream/clients/python/setup.py
+++ b/stream/clients/python/setup.py
@@ -19,7 +19,7 @@
 
 name = 'apache-bookkeeper-client'
 description = 'Apache BookKeeper client library'
-version = '4.9.1-alpha-0'
+version = '4.9.1'
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'