Bump version number to 4.3.1

Author: plusvic

setup.py

@@ -372,7 +372,7 @@ def run(self):
 
 setup(
     name='yara-python',
-    version='4.3.0',
+    version='4.3.1',
     description='Python interface for YARA',
     long_description=readme,
     license='Apache 2.0',