chore: bump up version to 1.9.0

Author: ynqa

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name='pandavro',
-    version='1.8.0',
+    version='1.9.0',
     description='The interface between Avro and pandas DataFrame',
     long_description=long_description,
     long_description_content_type='text/markdown',