chore:add Azure openai api version 2024-08-01-preview (#8291)

api/core/model_runtime/model_providers/azure_openai/azure_openai.yaml

@@ -53,6 +53,12 @@ model_credential_schema:
       type: select
       required: true
       options:
+        - label:
+            en_US: 2024-08-01-preview
+          value: 2024-08-01-preview
+        - label:
+            en_US: 2024-07-01-preview
+          value: 2024-07-01-preview
         - label:
             en_US: 2024-05-01-preview
           value: 2024-05-01-preview