Bump version to 0.51.0 (#261)

Author: bdraco

setup.py

@@ -10,7 +10,7 @@
         "cryptography>=39.0.0",
         "pyOpenSSL>=23.0.0",
     ],
-    version="0.50.1",
+    version="0.51.0",
     description="A library to communicate with Switchbot",
     author="Daniel Hjelseth Hoyer",
     url="https://github.com/Danielhiversen/pySwitchbot/",