update version

Author: FumingZhang

src/aks-preview/azext_aks_preview/vendored_sdks/azure_mgmt_preview_aks/_version.py

@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "1.0.0b1"
+VERSION = "39.0.0b1"