build: update azure_functions_worker_v2 version to 1.0.0b1 (#1734)

Co-authored-by: AzureFunctionsPython <azfunc@microsoft.com>

Author: hallvictoria

azure_functions_worker_v2/azure_functions_worker_v2/version.py

@@ -1,4 +1,4 @@
 # Copyright (c) Microsoft Corporation. All rights reserved.
 # Licensed under the MIT License.
 
-VERSION = '1.0.0a3'
+VERSION = '1.0.0b1'