Bump zigpy version

puddly · puddly · commit 7609ebcce59c · 2020-04-27T11:36:16.000-04:00
diff --git a/setup.py b/setup.py
@@ -21,7 +21,7 @@
     install_requires=[
         "attrs",
         "pyserial-asyncio",
-        "zigpy>=0.20.1a1",
+        "zigpy>=0.20.1a2",
         "async_timeout",
         "voluptuous",
     ],
