Update Pyrogram to v0.15.1

Author: delivrance

pyrogram/__init__.py

@@ -24,7 +24,7 @@
     # Monkey patch the standard "typing" module because Python versions from 3.5.0 to 3.5.2 have a broken one.
     sys.modules["typing"] = typing
 
-__version__ = "0.15.0"
+__version__ = "0.15.1"
 __license__ = "GNU Lesser General Public License v3 or later (LGPLv3+)"
 __copyright__ = "Copyright (C) 2017-2019 Dan <https://github.com/delivrance>"