build: update Python Library Version to 1.21.1

AzureFunctionsPython · AzureFunctionsPython · commit 52a5bbe85785 · 2024-09-30T19:42:03.000Z
diff --git a/azure/functions/__init__.py b/azure/functions/__init__.py
@@ -98,4 +98,4 @@
     'BlobSource'
 )
 
-__version__ = '1.21.0'
+__version__ = '1.21.1'
