chore: version bump

Author: Tbaile

setup.py

@@ -7,7 +7,7 @@
 
 setup(
     name = 'nethsec',
-    version = '1.3.0',
+    version = '1.3.1',
     author = 'Giacomo Sanchietti',
     author_email = 'giacomo.sanchietti@nethesis.it',
     description = 'Utilities for NethSecurity development',