build: update Python Library Version to 1.22.0b4

AzureFunctionsPython · AzureFunctionsPython · commit c006ebf4e806 · 2024-10-17T16:21:54.000Z
diff --git a/azure/functions/__init__.py b/azure/functions/__init__.py
@@ -102,4 +102,4 @@
     'BlobSource'
 )
 
-__version__ = '1.22.0b3'
+__version__ = '1.22.0b4'
