Bumping version to 0.12.1

Author: marcos-albornoz

setup.py

@@ -12,7 +12,7 @@
 # README = (HERE / "README.md").read_text()
 
 setup(name='vcert',
-      version='0.12.0',
+      version='0.12.1',
       url="https://github.com/Venafi/vcert-python",
       packages=['vcert', 'vcert.parser', 'vcert.policy'],
       install_requires=['requests<=2.25.1', 'python-dateutil<=2.8.1', 'certvalidator<=0.11.1', 'six<=1.15.0',